pair,contact1,contact2,flow1,flow2 3cme_X_,2,68,1,1 3cme_X_,4,66,1,1 3cme_X_,6,64,1,1 3cme_X_,8,11,1,1 3cme_X_,8,62,1,1 3cme_X_,9,12,1,1 3cme_X_,10,13,1,1 3cme_X_,11,14,1,1 3cme_X_,15,18,1,1 3cme_X_,18,22,1,1 3cme_X_,19,23,1,1 3cme_X_,20,24,1,1 3cme_X_,20,57,1,1 3cme_X_,21,25,1,1 3cme_X_,21,57,1,1 3cme_X_,22,26,1,1 3cme_X_,23,27,1,1 3cme_X_,24,28,1,1 3cme_X_,25,29,1,1 3cme_X_,26,30,1,1 3cme_X_,27,31,1,1 3cme_X_,28,32,1,1 3cme_X_,28,39,1,1 3cme_X_,28,42,1,1 3cme_X_,29,33,1,1 3cme_X_,30,34,1,1 3cme_X_,31,35,1,1 3cme_X_,32,37,1,1 3cme_X_,33,36,1,1 3cme_X_,38,41,1,1 3cme_X_,39,42,1,1 3cme_X_,41,77,1,1 3cme_X_,43,45,1,1 3cme_X_,43,77,1,1 3cme_X_,43,79,1,1 3cme_X_,45,47,1,1 3cme_X_,45,48,1,1 3cme_X_,45,79,1,1 3cme_X_,46,50,1,1 3cme_X_,47,51,1,1 3cme_X_,47,81,1,1 3cme_X_,48,52,1,1 3cme_X_,49,53,1,1 3cme_X_,55,59,1,1 3cme_X_,67,80,1,1 3cme_X_,69,78,1,1 3cme_X_,71,76,1,1 3cme_X_,72,75,1,1