pair,contact1,contact2,flow1,flow2 2zhx_B_,1,3,1,1 2zhx_B_,1,4,1,1 2zhx_B_,3,7,1,1 2zhx_B_,5,8,1,1 2zhx_B_,5,9,1,1 2zhx_B_,6,10,1,1 2zhx_B_,9,80,1,1 2zhx_B_,17,43,1,1 2zhx_B_,18,43,1,1 2zhx_B_,20,41,1,1 2zhx_B_,22,39,1,1 2zhx_B_,23,26,1,1 2zhx_B_,23,27,1,1 2zhx_B_,24,28,1,1 2zhx_B_,27,30,1,1 2zhx_B_,27,31,1,1 2zhx_B_,28,32,1,1 2zhx_B_,40,57,1,1 2zhx_B_,41,43,1,1 2zhx_B_,42,55,1,1 2zhx_B_,44,53,1,1 2zhx_B_,45,47,1,1 2zhx_B_,45,50,1,1 2zhx_B_,46,48,1,1 2zhx_B_,46,49,1,1 2zhx_B_,46,51,1,1 2zhx_B_,49,51,1,1 2zhx_B_,52,71,1,1 2zhx_B_,54,69,1,1 2zhx_B_,56,66,1,1 2zhx_B_,56,67,1,1 2zhx_B_,57,58,1,1 2zhx_B_,58,62,1,1 2zhx_B_,58,64,1,1 2zhx_B_,59,60,1,1 2zhx_B_,66,82,1,1 2zhx_B_,68,80,1,1 2zhx_B_,70,78,1,1 2zhx_B_,71,77,1,1 2zhx_B_,72,74,1,1 2zhx_B_,72,75,1,1 2zhx_B_,72,76,1,1