pair,contact1,contact2,flow1,flow2 2m4g_A_,2,4,1,1 2m4g_A_,4,7,1,1 2m4g_A_,8,10,1,1 2m4g_A_,9,43,1,1 2m4g_A_,12,16,1,1 2m4g_A_,13,17,1,1 2m4g_A_,14,18,1,1 2m4g_A_,15,19,1,1 2m4g_A_,15,39,1,1 2m4g_A_,16,20,1,1 2m4g_A_,17,21,1,1 2m4g_A_,18,22,1,1 2m4g_A_,19,23,1,1 2m4g_A_,20,24,1,1 2m4g_A_,21,25,1,1 2m4g_A_,22,26,1,1 2m4g_A_,22,42,1,1 2m4g_A_,23,26,1,1 2m4g_A_,23,28,1,1 2m4g_A_,23,30,1,1 2m4g_A_,24,27,1,1 2m4g_A_,26,29,1,1 2m4g_A_,31,34,1,1 2m4g_A_,31,35,1,1 2m4g_A_,32,36,1,1 2m4g_A_,33,37,1,1 2m4g_A_,34,38,1,1 2m4g_A_,35,39,1,1 2m4g_A_,36,40,1,1 2m4g_A_,38,41,1,1 2m4g_A_,38,42,1,1 2m4g_A_,39,43,1,1 2m4g_A_,40,41,1,1 2m4g_A_,41,45,1,1 2m4g_A_,43,46,1,1 2m4g_A_,48,50,1,1 2m4g_A_,49,52,1,1 2m4g_A_,50,62,1,1 2m4g_A_,59,62,1,1 2m4g_A_,60,63,1,1