Non-words in zephyrgrams

In zephyrgrams, these are the 505 most commonly used words which don't appear in a pretty large word list (English contractions were also omitted).
    occurrences   word
    -----------  ------
       1372        cs
       1245        1
       1203        -
       1124        cmu
        985        2
        923        --
        904        afs
        887        edu
        846        usr
        827        0
        823        3
        650        5
        532        etc
        524        misc
        496        george
        491        4
        491        c
        489        andrew
        480        x
        466        emacs
        452        10
        415        com
        413        s
        383        ok
        375        e
        350        landay
        340        6
        314        james
        297        30
        294        8
        293        00
        290        w
        267        gnu-emacs
        265        7
        248        9
        241        o
        241        ftp
        234        unix
        231        b
        222        11
        217        19
        217        g
        214        n
        211        lemacs
        208        20
        207        _
        202        15
        201        internet
        199        scs
        199        ms
        197        m
        192        html
        191        bsy
        188        www
        187        u
        185        dec
        184        '
        184        1993
        180        d
        179        pittsburgh
        178        12
        175        h
        173        telnet
        172        14
        172        foo
        168        t
        165        ps
        164        btw
        163        p
        157        18
        157        http
        153        f
        153        gonna
        147        93
        145        upi
        144        gusciora
        143        ''
        140        r
        139        email
        136        16
        135        zwgc
        134        xterm
        133        clamen
        131        jch
        131        hmm
        130        17
        128        ls
        126        100
        125        cal
        125        000
        122        jonathan
        121        anwar
        119        grep
        116        50
        115        sunos
        113        newsgroups
        113        l
        113        cc
        112        friday
        111        newsrc
        111        sippy
        110        american
        110        v
        107        tmp
        107        13
        106        pm
        105        netnews
        105        pc
        105        mit
        104        24
        104        url
        103        src
        103        clinton
        103        gp
        103        25
        102        ucla
        101        128
        101        sys
        101        gcc
        100        tv
        100        login
        100        'em
        99         trn
        96         netnews-2
        96         jan
        96         hmmm
        95         -l
        94         karl
        92         __
        90         21
        90         23
        90         york
        87         online
        87         uh
        86         pmax
        83         aug
        83         dunno
        83         berkeley
        83         40
        82         sparc
        81         fs
        81         csh
        81         modem
        80         ip
        80         22
        79         ibm
        79         oct
        78         database
        78         z
        77         ie
        76         weh
        76         nntp
        76         nt
        75         31
        75         1994
        75         monday
        74         perl
        73         dnntpd
        73         tex
        73         dkindred
        73         washington
        72         california
        72         opr
        71         dnntp
        71         tty
        71         jim
        70         26
        70         clari
        70         vs
        70         2nd
        70         osf
        69         kerberos
        69         zwrite
        69         localhost
        68         w3
        68         x11
        68         28
        68         on-line
        68         carnegie
        67         3rd
        67         200
        66         alex
        65         32
        65         ain't
        65         bboard
        64         usr0
        64         kinda
        64         newsgroup
        64         stichnot
        63         5409
        63         gotta
        63         mellon
        62         cd
        62         1st
        62         undergrad
        61         k
        61         mh
        61         pgh
        60         27
        60         rfs
        60         ___
        60         45
        60         sp
        60         nov
        59         29
        59         1992
        58         unix-forum
        58         xv
        57         org
        57         reboot
        57         thursday
        57         passwd
        57         it'll
        56         mr
        56         adm
        56         wanna
        56         undergrads
        55         j
        55         gso
        55         5000
        55         90
        55         linux
        54         m-x
        54         mnr
        54         weren't
        53         y
        53         -f
        53         iwarp
        53         xrn
        53         tuesday
        52         inc
        52         microsoft
        52         dir
        52         int
        52         4th
        52         vm
        52         ansi
        51         60
        51         netnews-1
        51         wednesday
        50         ld
        50         netrek
        50         rn
        50         san
        50         srv
        49         bsd
        49         ---
        49         faq
        49         ncsa
        49         kuwait
        48         maildelivery
        48         e-mail
        48         psc
        48         eg
        48         hawaii
        48         hostq
        48         url_fetch
        48         35
        47         msg
        47         brian
        47         sunday
        47         64
        46         um
        46         q
        46         34
        46         cpu
        46         ap
        46         c's
        46         nafta
        45         ca
        45         nb
        45         gif
        45         486
        45         framemaker
        45         42
        44         co
        44         cboards
        44         st
        44         dennis
        43         tzc
        43         gdb
        43         120
        43         min
        43         lpath
        43         saturday
        43         america
        42         ascii
        42         -i
        42         09
        42         tech
        42         pts
        42         archie
        42         sheesh
        42         ultrix
        42         70
        41         01
        41         ii
        41         xmosaic
        41         33
        41         rct
        41         500
        41         corp
        41         tcp
        41         gosmacs
        40         steelers
        40         gov
        40         54
        40         maui
        40         est
        40         55
        39         txt
        39         pennsylvania
        39         todd
        39         netnews-3
        39         dr
        39         arizona
        39         october
        39         phd
        39         pmax_mach
        39         48
        39         jeff
        39         david
        38         80
        38         message-id
        38         sendmail
        38         chicago
        38         nah
        38         stty
        38         43
        38         michael
        38         222
        38         desc
        37         ch
        37         usair
        37         pitt
        37         santa
        37         godiva
        37         british
        37         nyt
        36         diff
        36         44
        36         bboards
        36         sep
        36         -e
        36         xmodmap
        35         wais
        35         -n
        35         cuz
        35         ohio
        35         04
        35         wrct
        35         rsh
        34         vi
        34         miami
        34         36
        34         46
        34         modems
        34         inetd
        34         ethernet
        34         tcsh
        34         paul
        34         def
        34         zgrams
        34         300
        33         florida
        33         41
        33         anyuser
        33         elisp
        33         8001
        33         spok
        33         posix
        33         startup
        33         landay's
        33         ucb
        33         mmdf
        33         klog
        33         sml
        33         russian
        33         iraq
        33         newsreader
        32         0k
        32         heh
        32         uiuc
        32         ic
        32         4623
        32         -1
        32         -rwxr-xr-x
        32         1000
        32         january
        32         esmeril
        32         admin
        32         sw
        32         al
        32         justin
        32         -c
        32         stewart
        32         gs
        31         mexico
        31         cnn
        31         02
        31         japanese
        31         juan
        31         bb
        30         aphrodite
        30         atlanta
        30         config
        30         george's
        30         hci
        30         sun4
        30         december
        30         setq
        30         dept
        30         250
        30         sf
        30         rm
        30         irc
        30         ooops
        30         192
        30         uk
        30         authuser
        30         -s
        29         monroeville
        29         56
        29         mips
        29         95
        29         ctrl
        29         struct
        29         har
        29         rudy
        29         sun4_mach
        29         59
        29         zctl
        28         sushi
        28         mach3
        28         tm
        28         5th
        28         rt
        28         los
        28         teh
        28         fri
        28         geez
        28         dvips
        28         nfs
        28         -rw-r--r--
        28         800
        27         -2
        27         supercomputer
        27         38
        27         mpeg
        27         05
        27         pid
        27         ac
        27         0xff
        27         mm
        27         ftpd
        27         london
        27         aix
        27         37
        27         mtv
        27         furtherdetails
        27         -a
        27         mx
        26         canada
        26         51
        26         addr
        26         temp
        26         forbes
        26         mailcap
        26         zgram
        26         hm
        26         robert
        26         rebooting
        26         americans
        26         we'd
        26         cd-rom
        26         'bout
        26         europe
        26         christmas
        26         mathematica
        26         they'd
        26         hostname
        26         gnu-others
        26         sci
        25         bsy's
        25         dallas
        25         gzip
        25         toronto
        25         ll
        25         rl
        25         makefile
        25         rootl
        25         06
        25         bitmap
        25         skibo
        25         nntpserver
        25         israel
        25         nasa
        25         scott
        25         gs13
        25         pgp
        25         venus
        25         8th
        25         sharon
        25         phillies
        25         cp
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Darrell.Kindred@cs.cmu.edu