pair,contact1,contact2,flow1,flow2 3dz4_B_,5,7,1,1 3dz4_B_,12,14,1,1 3dz4_B_,17,19,1,1 3dz4_B_,23,25,1,1 3dz4_B_,23,28,1,1 3dz4_B_,25,27,1,1 3dz4_B_,25,28,1,1 3dz4_B_,26,29,1,1 3dz4_B_,27,52,1,1 3dz4_B_,30,33,1,1 3dz4_B_,30,34,1,1 3dz4_B_,31,35,1,1 3dz4_B_,32,36,1,1 3dz4_B_,33,37,1,1 3dz4_B_,34,38,1,1 3dz4_B_,36,39,1,1 3dz4_B_,38,43,1,1 3dz4_B_,39,42,1,1 3dz4_B_,44,60,1,1 3dz4_B_,46,58,1,1 3dz4_B_,47,58,1,1 3dz4_B_,49,56,1,1 3dz4_B_,51,54,1,1 3dz4_B_,60,61,1,1