pair,contact1,contact2,flow1,flow2 8c2s_a_,1,4,1,1 8c2s_a_,2,5,1,1 8c2s_a_,3,6,1,1 8c2s_a_,6,10,1,1 8c2s_a_,7,11,1,1 8c2s_a_,8,12,1,1 8c2s_a_,9,13,1,1 8c2s_a_,10,14,1,1 8c2s_a_,11,15,1,1 8c2s_a_,12,16,1,1 8c2s_a_,13,17,1,1 8c2s_a_,14,18,1,1 8c2s_a_,17,21,1,1 8c2s_a_,18,22,1,1 8c2s_a_,19,22,1,1 8c2s_a_,19,23,1,1 8c2s_a_,20,24,1,1 8c2s_a_,21,25,1,1 8c2s_a_,22,26,1,1 8c2s_a_,23,27,1,1 8c2s_a_,24,28,1,1 8c2s_a_,25,29,1,1 8c2s_a_,26,30,1,1 8c2s_a_,27,30,1,1 8c2s_a_,27,31,1,1 8c2s_a_,28,31,1,1 8c2s_a_,28,33,1,1 8c2s_a_,31,34,1,1 8c2s_a_,31,60,1,1 8c2s_a_,32,34,1,1 8c2s_a_,34,61,1,1 8c2s_a_,37,51,1,1 8c2s_a_,37,60,1,1 8c2s_a_,40,44,1,1 8c2s_a_,41,45,1,1 8c2s_a_,42,46,1,1 8c2s_a_,43,47,1,1 8c2s_a_,44,48,1,1 8c2s_a_,45,49,1,1 8c2s_a_,46,50,1,1 8c2s_a_,47,51,1,1 8c2s_a_,48,52,1,1 8c2s_a_,49,52,1,1 8c2s_a_,49,53,1,1 8c2s_a_,50,54,1,1 8c2s_a_,51,55,1,1 8c2s_a_,52,55,1,1 8c2s_a_,52,58,1,1 8c2s_a_,55,59,1,1 8c2s_a_,65,68,1,1