This file points to 4 pairs of files of the form    "?s1*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1s14_A	1s14_A_sse
1s16_A	1s16_A_sse
1s18_A	1s18_A_sse
1s1q_A	1s1q_A_sse