pair,contact1,contact2,flow1,flow2 1i8h_B_,1,2,1,1 1i8h_B_,3,6,1,1 1i8h_B_,5,21,1,1 1i8h_B_,5,22,1,1 1i8h_B_,5,23,1,1 1i8h_B_,7,8,1,1 1i8h_B_,7,9,1,1 1i8h_B_,7,20,1,1 1i8h_B_,9,18,1,1 1i8h_B_,9,22,1,1 1i8h_B_,10,11,1,1 1i8h_B_,15,16,1,1 1i8h_B_,19,28,1,1 1i8h_B_,21,25,1,1 1i8h_B_,21,26,1,1 1i8h_B_,30,31,1,1 1i8h_B_,31,33,1,1 1i8h_B_,31,35,1,1 1i8h_B_,32,34,1,1 1i8h_B_,36,37,1,1 1i8h_B_,36,39,1,1 1i8h_B_,37,39,1,1