pair,contact1,contact2,flow1,flow2 8s4g_G_,12,15,1,1 8s4g_G_,13,16,1,1 8s4g_G_,15,18,1,1 8s4g_G_,16,20,1,1 8s4g_G_,17,21,1,1 8s4g_G_,18,22,1,1 8s4g_G_,19,23,1,1 8s4g_G_,20,24,1,1 8s4g_G_,21,25,1,1 8s4g_G_,22,26,1,1 8s4g_G_,23,27,1,1