pair,contact1,contact2,flow1,flow2
1i8g_A_,1,2,1,1
1i8g_A_,1,7,1,1
1i8g_A_,1,8,1,1
1i8g_A_,1,9,1,1
1i8g_A_,2,4,1,1
1i8g_A_,6,7,1,1