pair,contact1,contact2,flow1,flow2 1zhc_A_,2,5,1,1 1zhc_A_,3,6,1,1 1zhc_A_,3,7,1,1 1zhc_A_,6,7,1,1 1zhc_A_,6,10,1,1 1zhc_A_,7,11,1,1 1zhc_A_,8,12,1,1 1zhc_A_,11,15,1,1 1zhc_A_,13,16,1,1 1zhc_A_,16,19,1,1 1zhc_A_,17,20,1,1 1zhc_A_,18,21,1,1 1zhc_A_,18,22,1,1 1zhc_A_,19,23,1,1 1zhc_A_,19,24,1,1 1zhc_A_,20,24,1,1 1zhc_A_,21,25,1,1 1zhc_A_,22,26,1,1 1zhc_A_,23,27,1,1 1zhc_A_,24,28,1,1 1zhc_A_,25,29,1,1 1zhc_A_,26,30,1,1 1zhc_A_,28,32,1,1 1zhc_A_,29,32,1,1 1zhc_A_,29,33,1,1 1zhc_A_,30,34,1,1 1zhc_A_,31,35,1,1 1zhc_A_,32,36,1,1 1zhc_A_,34,38,1,1 1zhc_A_,35,39,1,1 1zhc_A_,36,39,1,1 1zhc_A_,36,40,1,1 1zhc_A_,42,46,1,1 1zhc_A_,43,47,1,1 1zhc_A_,44,48,1,1 1zhc_A_,45,49,1,1 1zhc_A_,49,52,1,1 1zhc_A_,49,53,1,1 1zhc_A_,50,53,1,1 1zhc_A_,50,54,1,1 1zhc_A_,52,56,1,1 1zhc_A_,54,58,1,1 1zhc_A_,57,61,1,1 1zhc_A_,58,62,1,1 1zhc_A_,59,63,1,1 1zhc_A_,61,65,1,1 1zhc_A_,62,66,1,1 1zhc_A_,64,68,1,1 1zhc_A_,65,69,1,1 1zhc_A_,67,71,1,1 1zhc_A_,68,72,1,1 1zhc_A_,70,74,1,1 1zhc_A_,71,75,1,1 1zhc_A_,71,76,1,1 1zhc_A_,74,75,1,1