pair,contact1,contact2,flow1,flow2 1b2u_D_,2,24,1,1 1b2u_D_,2,49,1,1 1b2u_D_,2,51,1,1 1b2u_D_,4,51,1,1 1b2u_D_,4,53,1,1 1b2u_D_,5,24,1,1 1b2u_D_,6,53,1,1 1b2u_D_,6,55,1,1 1b2u_D_,7,10,1,1 1b2u_D_,8,11,1,1 1b2u_D_,8,55,1,1 1b2u_D_,12,16,1,1 1b2u_D_,13,16,1,1 1b2u_D_,13,17,1,1 1b2u_D_,14,18,1,1 1b2u_D_,15,19,1,1 1b2u_D_,16,20,1,1 1b2u_D_,17,21,1,1 1b2u_D_,18,22,1,1 1b2u_D_,18,31,1,1 1b2u_D_,19,23,1,1 1b2u_D_,20,24,1,1 1b2u_D_,21,25,1,1 1b2u_D_,22,27,1,1 1b2u_D_,22,29,1,1 1b2u_D_,23,26,1,1 1b2u_D_,26,45,1,1 1b2u_D_,28,31,1,1 1b2u_D_,32,34,1,1 1b2u_D_,34,37,1,1 1b2u_D_,34,38,1,1 1b2u_D_,35,39,1,1 1b2u_D_,36,40,1,1 1b2u_D_,37,41,1,1 1b2u_D_,38,42,1,1 1b2u_D_,39,43,1,1 1b2u_D_,40,44,1,1 1b2u_D_,41,46,1,1 1b2u_D_,42,48,1,1 1b2u_D_,48,83,1,1 1b2u_D_,50,84,1,1 1b2u_D_,50,86,1,1 1b2u_D_,52,86,1,1 1b2u_D_,52,88,1,1 1b2u_D_,53,55,1,1 1b2u_D_,54,60,1,1 1b2u_D_,54,88,1,1 1b2u_D_,54,90,1,1 1b2u_D_,56,60,1,1 1b2u_D_,56,90,1,1 1b2u_D_,57,60,1,1 1b2u_D_,57,61,1,1 1b2u_D_,58,61,1,1 1b2u_D_,59,62,1,1 1b2u_D_,60,64,1,1 1b2u_D_,61,64,1,1 1b2u_D_,64,67,1,1 1b2u_D_,64,68,1,1 1b2u_D_,66,70,1,1 1b2u_D_,67,71,1,1 1b2u_D_,68,72,1,1 1b2u_D_,69,73,1,1 1b2u_D_,70,74,1,1 1b2u_D_,71,75,1,1 1b2u_D_,72,76,1,1 1b2u_D_,73,77,1,1 1b2u_D_,74,78,1,1 1b2u_D_,75,79,1,1 1b2u_D_,76,80,1,1 1b2u_D_,77,81,1,1 1b2u_D_,78,81,1,1 1b2u_D_,78,83,1,1 1b2u_D_,79,82,1,1