pair,contact1,contact2,flow1,flow2 3dfx_A_,3,18,1,1 3dfx_A_,4,16,1,1 3dfx_A_,10,14,1,1 3dfx_A_,10,15,1,1 3dfx_A_,11,29,1,1 3dfx_A_,12,34,1,1 3dfx_A_,13,50,1,1 3dfx_A_,18,20,1,1 3dfx_A_,18,32,1,1 3dfx_A_,22,30,1,1 3dfx_A_,22,32,1,1 3dfx_A_,24,26,1,1 3dfx_A_,24,27,1,1 3dfx_A_,24,28,1,1 3dfx_A_,31,35,1,1 3dfx_A_,32,36,1,1 3dfx_A_,33,37,1,1 3dfx_A_,34,38,1,1 3dfx_A_,35,39,1,1 3dfx_A_,36,40,1,1 3dfx_A_,37,41,1,1 3dfx_A_,38,42,1,1 3dfx_A_,46,49,1,1 3dfx_A_,47,50,1,1