pair,contact1,contact2,flow1,flow2 1whc_A_,11,14,1,1 1whc_A_,11,15,1,1 1whc_A_,12,16,1,1 1whc_A_,13,17,1,1 1whc_A_,14,18,1,1 1whc_A_,16,19,1,1 1whc_A_,17,20,1,1 1whc_A_,22,26,1,1 1whc_A_,23,27,1,1 1whc_A_,24,28,1,1 1whc_A_,25,29,1,1 1whc_A_,26,30,1,1 1whc_A_,27,31,1,1 1whc_A_,28,32,1,1 1whc_A_,29,33,1,1 1whc_A_,30,34,1,1 1whc_A_,30,35,1,1 1whc_A_,37,41,1,1 1whc_A_,38,42,1,1 1whc_A_,39,43,1,1 1whc_A_,41,45,1,1 1whc_A_,42,46,1,1 1whc_A_,43,47,1,1 1whc_A_,44,48,1,1 1whc_A_,46,49,1,1 1whc_A_,48,51,1,1 1whc_A_,58,59,1,1