pair,contact1,contact2,flow1,flow2 6ret_S_,3,7,1,1 6ret_S_,4,8,1,1 6ret_S_,5,9,1,1 6ret_S_,6,10,1,1 6ret_S_,7,11,1,1 6ret_S_,8,12,1,1 6ret_S_,9,13,1,1 6ret_S_,12,16,1,1 6ret_S_,13,17,1,1 6ret_S_,14,18,1,1 6ret_S_,15,19,1,1 6ret_S_,16,20,1,1 6ret_S_,17,21,1,1 6ret_S_,18,22,1,1 6ret_S_,19,23,1,1 6ret_S_,19,240,1,1 6ret_S_,21,25,1,1 6ret_S_,22,26,1,1 6ret_S_,23,27,1,1 6ret_S_,24,28,1,1 6ret_S_,25,28,1,1 6ret_S_,25,29,1,1 6ret_S_,26,30,1,1 6ret_S_,27,31,1,1 6ret_S_,28,31,1,1 6ret_S_,28,32,1,1 6ret_S_,31,34,1,1 6ret_S_,34,38,1,1 6ret_S_,35,39,1,1 6ret_S_,36,40,1,1 6ret_S_,39,42,1,1 6ret_S_,40,219,1,1 6ret_S_,41,159,1,1 6ret_S_,42,45,1,1 6ret_S_,44,47,1,1 6ret_S_,44,48,1,1 6ret_S_,45,49,1,1 6ret_S_,47,50,1,1 6ret_S_,47,51,1,1 6ret_S_,54,171,1,1 6ret_S_,58,95,1,1 6ret_S_,59,62,1,1 6ret_S_,59,97,1,1 6ret_S_,60,150,1,1 6ret_S_,61,150,1,1 6ret_S_,61,151,1,1 6ret_S_,62,97,1,1 6ret_S_,64,100,1,1 6ret_S_,64,102,1,1 6ret_S_,65,153,1,1 6ret_S_,66,104,1,1 6ret_S_,67,155,1,1 6ret_S_,68,69,1,1 6ret_S_,68,104,1,1 6ret_S_,68,105,1,1 6ret_S_,69,78,1,1 6ret_S_,69,228,1,1 6ret_S_,70,106,1,1 6ret_S_,70,128,1,1 6ret_S_,72,74,1,1 6ret_S_,73,232,1,1 6ret_S_,74,231,1,1 6ret_S_,76,79,1,1 6ret_S_,76,80,1,1 6ret_S_,78,82,1,1 6ret_S_,79,80,1,1 6ret_S_,79,82,1,1 6ret_S_,79,83,1,1 6ret_S_,80,83,1,1 6ret_S_,80,84,1,1 6ret_S_,81,85,1,1 6ret_S_,83,87,1,1 6ret_S_,84,88,1,1 6ret_S_,85,89,1,1 6ret_S_,87,91,1,1 6ret_S_,89,92,1,1 6ret_S_,91,94,1,1 6ret_S_,92,97,1,1 6ret_S_,101,119,1,1 6ret_S_,103,120,1,1 6ret_S_,103,122,1,1 6ret_S_,103,124,1,1 6ret_S_,105,108,1,1 6ret_S_,105,124,1,1 6ret_S_,107,110,1,1 6ret_S_,107,111,1,1 6ret_S_,112,116,1,1 6ret_S_,113,117,1,1 6ret_S_,117,118,1,1 6ret_S_,121,147,1,1 6ret_S_,131,136,1,1 6ret_S_,133,136,1,1 6ret_S_,134,138,1,1 6ret_S_,135,138,1,1 6ret_S_,137,141,1,1 6ret_S_,138,142,1,1 6ret_S_,139,143,1,1 6ret_S_,149,174,1,1 6ret_S_,150,174,1,1 6ret_S_,152,172,1,1 6ret_S_,159,223,1,1 6ret_S_,171,212,1,1 6ret_S_,174,178,1,1 6ret_S_,175,180,1,1 6ret_S_,179,182,1,1 6ret_S_,179,183,1,1 6ret_S_,185,186,1,1 6ret_S_,188,191,1,1 6ret_S_,191,201,1,1 6ret_S_,198,199,1,1 6ret_S_,201,205,1,1 6ret_S_,203,207,1,1 6ret_S_,205,209,1,1 6ret_S_,208,212,1,1 6ret_S_,209,213,1,1 6ret_S_,210,214,1,1 6ret_S_,211,215,1,1 6ret_S_,212,216,1,1 6ret_S_,213,217,1,1 6ret_S_,215,219,1,1 6ret_S_,216,220,1,1 6ret_S_,217,221,1,1 6ret_S_,218,222,1,1 6ret_S_,219,223,1,1 6ret_S_,220,224,1,1 6ret_S_,221,225,1,1 6ret_S_,222,226,1,1 6ret_S_,223,227,1,1 6ret_S_,224,227,1,1 6ret_S_,224,228,1,1 6ret_S_,225,229,1,1 6ret_S_,227,231,1,1 6ret_S_,228,232,1,1 6ret_S_,231,234,1,1 6ret_S_,232,236,1,1 6ret_S_,235,239,1,1 6ret_S_,236,240,1,1 6ret_S_,237,241,1,1 6ret_S_,238,242,1,1 6ret_S_,239,243,1,1 6ret_S_,241,244,1,1 6ret_S_,241,245,1,1 6ret_S_,242,246,1,1 6ret_S_,244,248,1,1 6ret_S_,245,248,1,1 6ret_S_,245,249,1,1 6ret_S_,247,251,1,1 6ret_S_,248,251,1,1 6ret_S_,249,253,1,1 6ret_S_,250,254,1,1 6ret_S_,251,255,1,1 6ret_S_,252,256,1,1 6ret_S_,253,257,1,1 6ret_S_,254,258,1,1 6ret_S_,255,258,1,1 6ret_S_,255,259,1,1 6ret_S_,257,261,1,1 6ret_S_,258,261,1,1 6ret_S_,258,262,1,1 6ret_S_,259,263,1,1 6ret_S_,260,264,1,1 6ret_S_,261,265,1,1 6ret_S_,263,267,1,1 6ret_S_,266,269,1,1 6ret_S_,266,270,1,1 6ret_S_,267,271,1,1 6ret_S_,270,273,1,1 6ret_S_,270,274,1,1 6ret_S_,273,276,1,1