pair,contact1,contact2,flow1,flow2 3ccv_U_,1,10,1,1 3ccv_U_,3,8,1,1 3ccv_U_,3,27,1,1 3ccv_U_,4,27,1,1 3ccv_U_,5,41,1,1 3ccv_U_,5,51,1,1 3ccv_U_,6,8,1,1 3ccv_U_,6,51,1,1 3ccv_U_,11,14,1,1 3ccv_U_,16,28,1,1 3ccv_U_,16,34,1,1 3ccv_U_,18,26,1,1 3ccv_U_,20,23,1,1 3ccv_U_,20,24,1,1 3ccv_U_,20,26,1,1 3ccv_U_,22,24,1,1 3ccv_U_,29,30,1,1 3ccv_U_,30,34,1,1 3ccv_U_,31,35,1,1 3ccv_U_,32,36,1,1 3ccv_U_,33,37,1,1 3ccv_U_,34,38,1,1 3ccv_U_,35,39,1,1 3ccv_U_,36,39,1,1 3ccv_U_,36,41,1,1 3ccv_U_,37,40,1,1 3ccv_U_,42,45,1,1 3ccv_U_,43,46,1,1 3ccv_U_,43,49,1,1 3ccv_U_,46,49,1,1 3ccv_U_,49,53,1,1