pair,contact1,contact2,flow1,flow2 4bbs_D_,1,2,1,1 4bbs_D_,5,6,1,1 4bbs_D_,5,30,1,1 4bbs_D_,9,10,1,1 4bbs_D_,10,12,1,1 4bbs_D_,13,15,1,1 4bbs_D_,14,17,1,1 4bbs_D_,24,26,1,1 4bbs_D_,32,34,1,1 4bbs_D_,33,45,1,1 4bbs_D_,35,43,1,1 4bbs_D_,37,38,1,1 4bbs_D_,37,40,1,1 4bbs_D_,37,41,1,1 4bbs_D_,49,53,1,1 4bbs_D_,50,52,1,1 4bbs_D_,50,139,1,1 4bbs_D_,51,55,1,1 4bbs_D_,51,109,1,1 4bbs_D_,51,111,1,1 4bbs_D_,52,56,1,1 4bbs_D_,53,57,1,1 4bbs_D_,54,58,1,1 4bbs_D_,54,112,1,1 4bbs_D_,55,59,1,1 4bbs_D_,56,60,1,1 4bbs_D_,57,61,1,1 4bbs_D_,58,62,1,1 4bbs_D_,58,79,1,1 4bbs_D_,59,63,1,1 4bbs_D_,60,64,1,1 4bbs_D_,61,65,1,1 4bbs_D_,62,66,1,1 4bbs_D_,63,67,1,1 4bbs_D_,64,68,1,1 4bbs_D_,64,90,1,1 4bbs_D_,65,68,1,1 4bbs_D_,65,69,1,1 4bbs_D_,66,70,1,1 4bbs_D_,67,71,1,1 4bbs_D_,68,71,1,1 4bbs_D_,69,89,1,1 4bbs_D_,70,73,1,1 4bbs_D_,75,77,1,1 4bbs_D_,76,80,1,1 4bbs_D_,78,81,1,1 4bbs_D_,78,82,1,1 4bbs_D_,79,82,1,1 4bbs_D_,79,83,1,1 4bbs_D_,81,85,1,1 4bbs_D_,82,85,1,1 4bbs_D_,82,86,1,1 4bbs_D_,83,87,1,1 4bbs_D_,85,89,1,1 4bbs_D_,86,89,1,1 4bbs_D_,86,90,1,1 4bbs_D_,87,90,1,1 4bbs_D_,87,91,1,1 4bbs_D_,88,99,1,1 4bbs_D_,94,96,1,1 4bbs_D_,95,98,1,1 4bbs_D_,95,99,1,1 4bbs_D_,96,100,1,1 4bbs_D_,97,101,1,1 4bbs_D_,98,102,1,1 4bbs_D_,99,103,1,1 4bbs_D_,100,104,1,1 4bbs_D_,101,105,1,1 4bbs_D_,102,106,1,1 4bbs_D_,103,107,1,1 4bbs_D_,104,107,1,1 4bbs_D_,104,108,1,1 4bbs_D_,105,109,1,1 4bbs_D_,110,137,1,1 4bbs_D_,110,175,1,1 4bbs_D_,110,176,1,1 4bbs_D_,112,176,1,1 4bbs_D_,113,116,1,1 4bbs_D_,113,117,1,1 4bbs_D_,114,118,1,1 4bbs_D_,115,119,1,1 4bbs_D_,116,120,1,1 4bbs_D_,117,121,1,1 4bbs_D_,118,122,1,1 4bbs_D_,119,123,1,1 4bbs_D_,120,124,1,1 4bbs_D_,122,125,1,1 4bbs_D_,124,127,1,1 4bbs_D_,130,132,1,1 4bbs_D_,130,133,1,1 4bbs_D_,130,134,1,1 4bbs_D_,131,135,1,1 4bbs_D_,132,136,1,1 4bbs_D_,133,137,1,1 4bbs_D_,133,158,1,1 4bbs_D_,134,138,1,1 4bbs_D_,135,138,1,1 4bbs_D_,135,139,1,1 4bbs_D_,136,139,1,1 4bbs_D_,136,140,1,1 4bbs_D_,140,142,1,1 4bbs_D_,143,147,1,1 4bbs_D_,144,147,1,1 4bbs_D_,144,148,1,1 4bbs_D_,145,149,1,1 4bbs_D_,145,165,1,1 4bbs_D_,146,150,1,1 4bbs_D_,147,150,1,1 4bbs_D_,147,151,1,1 4bbs_D_,148,152,1,1 4bbs_D_,149,156,1,1 4bbs_D_,149,159,1,1 4bbs_D_,149,161,1,1 4bbs_D_,152,155,1,1 4bbs_D_,155,158,1,1 4bbs_D_,160,163,1,1 4bbs_D_,160,164,1,1 4bbs_D_,162,166,1,1 4bbs_D_,163,167,1,1 4bbs_D_,164,168,1,1 4bbs_D_,165,169,1,1 4bbs_D_,166,170,1,1 4bbs_D_,167,171,1,1 4bbs_D_,168,172,1,1 4bbs_D_,169,172,1,1 4bbs_D_,169,173,1,1 4bbs_D_,170,173,1,1 4bbs_D_,170,174,1,1 4bbs_D_,171,175,1,1