This file points to 5 pairs of files of the form    "?a2*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1a25_A	1a25_A_sse
1a26	1a26_sse
1a28_A	1a28_A_sse
1a2o_A	1a2o_A_sse
1a2p_A	1a2p_A_sse