pair,contact1,contact2,flow1,flow2 8u4p_C_,1,5,1,1 8u4p_C_,2,6,1,1 8u4p_C_,3,7,1,1 8u4p_C_,4,8,1,1 8u4p_C_,5,9,1,1 8u4p_C_,6,10,1,1 8u4p_C_,7,11,1,1 8u4p_C_,18,22,1,1 8u4p_C_,19,23,1,1 8u4p_C_,20,24,1,1 8u4p_C_,21,25,1,1 8u4p_C_,22,26,1,1 8u4p_C_,23,27,1,1 8u4p_C_,24,28,1,1 8u4p_C_,25,29,1,1 8u4p_C_,26,30,1,1 8u4p_C_,27,31,1,1 8u4p_C_,28,32,1,1 8u4p_C_,29,33,1,1 8u4p_C_,31,34,1,1 8u4p_C_,37,39,1,1 8u4p_C_,37,41,1,1 8u4p_C_,44,47,1,1 8u4p_C_,45,48,1,1