pair,contact1,contact2,flow1,flow2 6sqr_D_,3,5,1,1 6sqr_D_,4,7,1,1 6sqr_D_,5,8,1,1 6sqr_D_,6,9,1,1 6sqr_D_,6,19,1,1 6sqr_D_,11,15,1,1 6sqr_D_,11,17,1,1 6sqr_D_,12,15,1,1 6sqr_D_,12,32,1,1 6sqr_D_,14,16,1,1 6sqr_D_,20,35,1,1 6sqr_D_,20,61,1,1 6sqr_D_,21,33,1,1 6sqr_D_,22,59,1,1 6sqr_D_,23,30,1,1 6sqr_D_,24,56,1,1 6sqr_D_,24,57,1,1 6sqr_D_,25,28,1,1 6sqr_D_,25,30,1,1 6sqr_D_,25,51,1,1 6sqr_D_,26,56,1,1 6sqr_D_,30,48,1,1 6sqr_D_,30,51,1,1 6sqr_D_,34,38,1,1 6sqr_D_,35,39,1,1 6sqr_D_,36,40,1,1 6sqr_D_,37,41,1,1 6sqr_D_,38,42,1,1 6sqr_D_,39,43,1,1 6sqr_D_,40,44,1,1 6sqr_D_,41,46,1,1 6sqr_D_,42,45,1,1 6sqr_D_,42,55,1,1 6sqr_D_,42,56,1,1 6sqr_D_,48,52,1,1 6sqr_D_,48,53,1,1 6sqr_D_,59,61,1,1