pair,contact1,contact2,flow1,flow2 2btr_A_,1,4,1,1 2btr_A_,2,24,1,1 2btr_A_,3,24,1,1 2btr_A_,5,22,1,1 2btr_A_,7,20,1,1 2btr_A_,8,20,1,1 2btr_A_,10,18,1,1 2btr_A_,11,18,1,1 2btr_A_,17,34,1,1 2btr_A_,19,32,1,1 2btr_A_,21,30,1,1 2btr_A_,23,25,1,1 2btr_A_,23,28,1,1 2btr_A_,26,28,1,1 2btr_A_,31,69,1,1 2btr_A_,33,67,1,1 2btr_A_,35,65,1,1 2btr_A_,36,40,1,1 2btr_A_,37,41,1,1 2btr_A_,38,42,1,1 2btr_A_,39,43,1,1 2btr_A_,40,44,1,1 2btr_A_,41,45,1,1 2btr_A_,42,45,1,1 2btr_A_,43,46,1,1 2btr_A_,44,47,1,1 2btr_A_,45,48,1,1 2btr_A_,46,48,1,1 2btr_A_,49,51,1,1 2btr_A_,49,52,1,1 2btr_A_,51,99,1,1 2btr_A_,51,130,1,1 2btr_A_,51,132,1,1 2btr_A_,53,132,1,1 2btr_A_,54,70,1,1 2btr_A_,56,68,1,1 2btr_A_,57,68,1,1 2btr_A_,59,66,1,1 2btr_A_,60,61,1,1 2btr_A_,61,64,1,1 2btr_A_,70,131,1,1 2btr_A_,74,124,1,1 2btr_A_,75,78,1,1 2btr_A_,75,79,1,1 2btr_A_,76,80,1,1 2btr_A_,76,122,1,1 2btr_A_,77,81,1,1 2btr_A_,78,82,1,1 2btr_A_,79,83,1,1 2btr_A_,80,83,1,1 2btr_A_,83,86,1,1 2btr_A_,83,87,1,1 2btr_A_,84,176,1,1 2btr_A_,86,87,1,1 2btr_A_,89,93,1,1 2btr_A_,90,94,1,1 2btr_A_,91,95,1,1 2btr_A_,92,96,1,1 2btr_A_,93,97,1,1 2btr_A_,94,98,1,1 2btr_A_,94,262,1,1 2btr_A_,94,265,1,1 2btr_A_,95,99,1,1 2btr_A_,96,100,1,1 2btr_A_,97,101,1,1 2btr_A_,98,102,1,1 2btr_A_,99,103,1,1 2btr_A_,99,128,1,1 2btr_A_,99,130,1,1 2btr_A_,100,104,1,1 2btr_A_,101,105,1,1 2btr_A_,102,106,1,1 2btr_A_,103,107,1,1 2btr_A_,104,108,1,1 2btr_A_,105,109,1,1 2btr_A_,106,109,1,1 2btr_A_,106,110,1,1 2btr_A_,107,110,1,1 2btr_A_,107,112,1,1 2btr_A_,108,111,1,1 2btr_A_,108,162,1,1 2btr_A_,114,162,1,1 2btr_A_,115,157,1,1 2btr_A_,115,162,1,1 2btr_A_,116,118,1,1 2btr_A_,116,121,1,1 2btr_A_,118,121,1,1 2btr_A_,119,122,1,1 2btr_A_,121,133,1,1 2btr_A_,123,131,1,1 2btr_A_,125,127,1,1 2btr_A_,125,128,1,1 2btr_A_,125,129,1,1 2btr_A_,143,146,1,1 2btr_A_,144,188,1,1 2btr_A_,145,165,1,1 2btr_A_,145,172,1,1 2btr_A_,147,150,1,1 2btr_A_,147,151,1,1 2btr_A_,148,152,1,1 2btr_A_,149,154,1,1 2btr_A_,149,251,1,1 2btr_A_,150,153,1,1 2btr_A_,152,212,1,1 2btr_A_,158,160,1,1 2btr_A_,158,161,1,1 2btr_A_,159,162,1,1 2btr_A_,160,164,1,1 2btr_A_,160,251,1,1 2btr_A_,161,165,1,1 2btr_A_,162,166,1,1 2btr_A_,163,167,1,1 2btr_A_,164,168,1,1 2btr_A_,165,169,1,1 2btr_A_,166,170,1,1 2btr_A_,167,171,1,1 2btr_A_,168,172,1,1 2btr_A_,169,173,1,1 2btr_A_,170,174,1,1 2btr_A_,171,175,1,1 2btr_A_,172,176,1,1 2btr_A_,175,177,1,1 2btr_A_,180,182,1,1 2btr_A_,180,188,1,1 2btr_A_,183,187,1,1 2btr_A_,184,187,1,1 2btr_A_,184,188,1,1 2btr_A_,185,189,1,1 2btr_A_,186,190,1,1 2btr_A_,187,191,1,1 2btr_A_,188,192,1,1 2btr_A_,189,193,1,1 2btr_A_,190,194,1,1 2btr_A_,191,195,1,1 2btr_A_,192,195,1,1 2btr_A_,192,196,1,1 2btr_A_,195,223,1,1 2btr_A_,196,222,1,1 2btr_A_,197,246,1,1 2btr_A_,198,218,1,1 2btr_A_,198,220,1,1 2btr_A_,200,203,1,1 2btr_A_,200,204,1,1 2btr_A_,201,206,1,1 2btr_A_,201,208,1,1 2btr_A_,204,207,1,1 2btr_A_,206,209,1,1 2btr_A_,207,210,1,1 2btr_A_,210,213,1,1 2btr_A_,214,217,1,1 2btr_A_,224,226,1,1 2btr_A_,224,227,1,1 2btr_A_,225,228,1,1 2btr_A_,225,229,1,1 2btr_A_,229,232,1,1 2btr_A_,232,237,1,1 2btr_A_,233,236,1,1 2btr_A_,233,237,1,1 2btr_A_,234,238,1,1 2btr_A_,235,239,1,1 2btr_A_,236,240,1,1 2btr_A_,237,241,1,1 2btr_A_,238,241,1,1 2btr_A_,238,242,1,1 2btr_A_,239,243,1,1 2btr_A_,240,243,1,1 2btr_A_,241,244,1,1 2btr_A_,242,252,1,1 2btr_A_,245,251,1,1 2btr_A_,246,251,1,1 2btr_A_,247,249,1,1 2btr_A_,247,250,1,1 2btr_A_,247,251,1,1 2btr_A_,253,256,1,1 2btr_A_,253,257,1,1 2btr_A_,254,258,1,1 2btr_A_,256,259,1,1 2btr_A_,257,260,1,1 2btr_A_,260,263,1,1 2btr_A_,261,264,1,1 2btr_A_,263,266,1,1