This file points to 6 pairs of files of the form    "?d4*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1d4a_A	1d4a_A_sse
1d4b_A	1d4b_A_sse
1d4o_A	1d4o_A_sse
1d4t_A	1d4t_A_sse
1d4v_A	1d4v_A_sse
1d4x_G	1d4x_G_sse