pair,contact1,contact2,flow1,flow2 4npf_X_,4,9,1,1 4npf_X_,5,8,1,1 4npf_X_,5,9,1,1 4npf_X_,6,10,1,1 4npf_X_,7,10,1,1 4npf_X_,7,11,1,1 4npf_X_,8,12,1,1 4npf_X_,9,13,1,1 4npf_X_,10,14,1,1 4npf_X_,11,15,1,1 4npf_X_,12,16,1,1 4npf_X_,13,17,1,1 4npf_X_,14,17,1,1 4npf_X_,14,18,1,1 4npf_X_,14,48,1,1 4npf_X_,15,18,1,1 4npf_X_,15,26,1,1 4npf_X_,18,26,1,1 4npf_X_,20,51,1,1 4npf_X_,20,54,1,1 4npf_X_,22,25,1,1 4npf_X_,22,26,1,1 4npf_X_,23,27,1,1 4npf_X_,24,28,1,1 4npf_X_,25,29,1,1 4npf_X_,25,54,1,1 4npf_X_,26,30,1,1 4npf_X_,27,31,1,1 4npf_X_,28,32,1,1 4npf_X_,29,33,1,1 4npf_X_,30,34,1,1 4npf_X_,31,34,1,1 4npf_X_,31,35,1,1 4npf_X_,32,36,1,1 4npf_X_,33,36,1,1 4npf_X_,36,38,1,1 4npf_X_,36,39,1,1 4npf_X_,37,40,1,1 4npf_X_,39,43,1,1 4npf_X_,40,44,1,1 4npf_X_,41,45,1,1 4npf_X_,42,46,1,1 4npf_X_,43,47,1,1 4npf_X_,44,48,1,1 4npf_X_,45,49,1,1 4npf_X_,46,50,1,1 4npf_X_,47,51,1,1 4npf_X_,48,52,1,1 4npf_X_,49,53,1,1 4npf_X_,50,54,1,1 4npf_X_,51,54,1,1 4npf_X_,52,75,1,1 4npf_X_,56,70,1,1 4npf_X_,57,60,1,1 4npf_X_,58,71,1,1 4npf_X_,59,61,1,1 4npf_X_,59,62,1,1 4npf_X_,59,67,1,1 4npf_X_,63,66,1,1 4npf_X_,63,67,1,1 4npf_X_,64,68,1,1 4npf_X_,65,69,1,1 4npf_X_,65,98,1,1 4npf_X_,66,70,1,1 4npf_X_,66,95,1,1 4npf_X_,67,71,1,1 4npf_X_,68,72,1,1 4npf_X_,69,73,1,1 4npf_X_,70,74,1,1 4npf_X_,71,75,1,1 4npf_X_,72,75,1,1 4npf_X_,72,106,1,1 4npf_X_,73,76,1,1 4npf_X_,73,84,1,1 4npf_X_,76,84,1,1 4npf_X_,78,109,1,1 4npf_X_,78,112,1,1 4npf_X_,80,83,1,1 4npf_X_,80,84,1,1 4npf_X_,81,84,1,1 4npf_X_,81,85,1,1 4npf_X_,82,86,1,1 4npf_X_,83,87,1,1 4npf_X_,83,112,1,1 4npf_X_,84,88,1,1 4npf_X_,85,89,1,1 4npf_X_,86,90,1,1 4npf_X_,87,91,1,1 4npf_X_,88,92,1,1 4npf_X_,89,93,1,1 4npf_X_,90,94,1,1 4npf_X_,94,96,1,1 4npf_X_,94,97,1,1 4npf_X_,95,98,1,1 4npf_X_,97,100,1,1 4npf_X_,97,101,1,1 4npf_X_,98,102,1,1 4npf_X_,99,103,1,1 4npf_X_,100,104,1,1 4npf_X_,101,105,1,1 4npf_X_,102,106,1,1 4npf_X_,103,107,1,1 4npf_X_,104,108,1,1 4npf_X_,105,109,1,1 4npf_X_,106,110,1,1 4npf_X_,107,111,1,1 4npf_X_,108,112,1,1 4npf_X_,109,110,1,1 4npf_X_,110,113,1,1