This file points to 4 pairs of files of the form    "?b7*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1b74_A	1b74_A_sse
1b77_A	1b77_A_sse
1b79_A	1b79_A_sse
1b7g_O	1b7g_O_sse