pair,contact1,contact2,flow1,flow2 4is1_C_,1,10,1,1 4is1_C_,3,7,1,1 4is1_C_,3,8,1,1 4is1_C_,6,19,1,1 4is1_C_,6,23,1,1 4is1_C_,12,15,1,1 4is1_C_,12,16,1,1 4is1_C_,13,17,1,1 4is1_C_,14,18,1,1 4is1_C_,15,19,1,1 4is1_C_,15,40,1,1 4is1_C_,16,20,1,1 4is1_C_,18,21,1,1 4is1_C_,19,22,1,1 4is1_C_,20,23,1,1 4is1_C_,20,24,1,1 4is1_C_,21,25,1,1 4is1_C_,21,39,1,1 4is1_C_,27,30,1,1 4is1_C_,29,38,1,1 4is1_C_,31,36,1,1 4is1_C_,31,47,1,1 4is1_C_,31,52,1,1 4is1_C_,34,47,1,1 4is1_C_,34,52,1,1 4is1_C_,40,43,1,1 4is1_C_,41,45,1,1 4is1_C_,42,45,1,1 4is1_C_,42,46,1,1 4is1_C_,43,47,1,1 4is1_C_,44,48,1,1 4is1_C_,45,49,1,1 4is1_C_,46,49,1,1 4is1_C_,46,50,1,1 4is1_C_,47,51,1,1 4is1_C_,47,52,1,1 4is1_C_,48,52,1,1