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

Crossing File	Backbone Overlay
1ukf_A	1ukf_A_sse
1ukk_A	1ukk_A_sse
1ukm_B	1ukm_B_sse
1uku_A	1uku_A_sse