pair,contact1,contact2,flow1,flow2
4ret_B_,3,5,1,1
4ret_B_,4,6,1,1
4ret_B_,8,11,1,1
4ret_B_,18,21,1,1
4ret_B_,19,23,1,1
4ret_B_,20,24,1,1
4ret_B_,21,25,1,1
4ret_B_,22,26,1,1
4ret_B_,23,27,1,1
4ret_B_,24,28,1,1
4ret_B_,25,29,1,1
4ret_B_,26,30,1,1
4ret_B_,27,31,1,1
4ret_B_,28,32,1,1
4ret_B_,29,33,1,1
4ret_B_,30,34,1,1
4ret_B_,31,35,1,1
4ret_B_,32,36,1,1
4ret_B_,33,37,1,1
4ret_B_,34,38,1,1
4ret_B_,35,39,1,1
4ret_B_,36,40,1,1
4ret_B_,37,40,1,1
4ret_B_,37,41,1,1
4ret_B_,38,42,1,1
4ret_B_,39,42,1,1
4ret_B_,39,43,1,1
4ret_B_,40,44,1,1
4ret_B_,41,45,1,1
4ret_B_,42,46,1,1
4ret_B_,43,47,1,1
4ret_B_,44,47,1,1
4ret_B_,56,59,1,1
4ret_B_,56,171,1,1
4ret_B_,63,168,1,1
4ret_B_,64,278,1,1
4ret_B_,65,166,1,1
4ret_B_,67,69,1,1
4ret_B_,67,164,1,1
4ret_B_,70,74,1,1
4ret_B_,73,285,1,1
4ret_B_,75,285,1,1
4ret_B_,75,287,1,1
4ret_B_,76,287,1,1
4ret_B_,77,287,1,1
4ret_B_,77,289,1,1
4ret_B_,78,84,1,1
4ret_B_,80,290,1,1
4ret_B_,81,83,1,1
4ret_B_,81,84,1,1
4ret_B_,85,89,1,1
4ret_B_,86,90,1,1
4ret_B_,87,91,1,1
4ret_B_,88,92,1,1
4ret_B_,89,93,1,1
4ret_B_,90,94,1,1
4ret_B_,91,95,1,1
4ret_B_,92,96,1,1
4ret_B_,94,97,1,1
4ret_B_,96,99,1,1
4ret_B_,99,243,1,1
4ret_B_,100,103,1,1
4ret_B_,100,104,1,1
4ret_B_,104,137,1,1
4ret_B_,104,138,1,1
4ret_B_,107,134,1,1
4ret_B_,108,134,1,1
4ret_B_,109,135,1,1
4ret_B_,111,121,1,1
4ret_B_,111,123,1,1
4ret_B_,111,135,1,1
4ret_B_,111,137,1,1
4ret_B_,114,228,1,1
4ret_B_,116,228,1,1
4ret_B_,117,191,1,1
4ret_B_,121,230,1,1
4ret_B_,122,174,1,1
4ret_B_,123,233,1,1
4ret_B_,125,127,1,1
4ret_B_,127,133,1,1
4ret_B_,133,237,1,1
4ret_B_,134,238,1,1
4ret_B_,136,228,1,1
4ret_B_,137,229,1,1
4ret_B_,139,142,1,1
4ret_B_,140,143,1,1
4ret_B_,145,153,1,1
4ret_B_,147,156,1,1
4ret_B_,155,158,1,1
4ret_B_,160,249,1,1
4ret_B_,161,250,1,1
4ret_B_,163,248,1,1
4ret_B_,165,246,1,1
4ret_B_,170,173,1,1
4ret_B_,172,232,1,1
4ret_B_,176,268,1,1
4ret_B_,179,182,1,1
4ret_B_,180,192,1,1
4ret_B_,194,227,1,1
4ret_B_,196,225,1,1
4ret_B_,197,266,1,1
4ret_B_,198,223,1,1
4ret_B_,199,264,1,1
4ret_B_,200,216,1,1
4ret_B_,201,262,1,1
4ret_B_,210,212,1,1
4ret_B_,213,251,1,1
4ret_B_,215,249,1,1
4ret_B_,217,247,1,1
4ret_B_,218,221,1,1
4ret_B_,219,222,1,1
4ret_B_,222,224,1,1
4ret_B_,227,230,1,1
4ret_B_,229,241,1,1
4ret_B_,233,238,1,1
4ret_B_,234,238,1,1
4ret_B_,254,257,1,1
4ret_B_,256,290,1,1
4ret_B_,259,286,1,1
4ret_B_,261,284,1,1
4ret_B_,263,282,1,1
4ret_B_,265,272,1,1
4ret_B_,265,280,1,1
4ret_B_,273,275,1,1
4ret_B_,273,276,1,1
4ret_B_,276,278,1,1
4ret_B_,276,279,1,1