pair,contact1,contact2,flow1,flow2 8wal_S_,1,4,1,1 8wal_S_,2,5,1,1 8wal_S_,13,128,1,1 8wal_S_,13,131,1,1 8wal_S_,13,133,1,1 8wal_S_,22,137,1,1 8wal_S_,24,138,1,1 8wal_S_,24,140,1,1 8wal_S_,26,140,1,1 8wal_S_,26,142,1,1 8wal_S_,28,31,1,1 8wal_S_,29,32,1,1 8wal_S_,31,104,1,1 8wal_S_,34,36,1,1 8wal_S_,35,38,1,1 8wal_S_,37,39,1,1 8wal_S_,37,99,1,1 8wal_S_,40,99,1,1 8wal_S_,42,97,1,1 8wal_S_,44,95,1,1 8wal_S_,45,92,1,1 8wal_S_,46,48,1,1 8wal_S_,46,93,1,1 8wal_S_,47,50,1,1 8wal_S_,48,52,1,1 8wal_S_,49,53,1,1 8wal_S_,49,54,1,1 8wal_S_,55,57,1,1 8wal_S_,57,61,1,1 8wal_S_,58,61,1,1 8wal_S_,58,62,1,1 8wal_S_,60,77,1,1 8wal_S_,66,67,1,1 8wal_S_,66,70,1,1 8wal_S_,67,70,1,1 8wal_S_,67,71,1,1 8wal_S_,68,72,1,1 8wal_S_,69,73,1,1 8wal_S_,70,74,1,1 8wal_S_,71,75,1,1 8wal_S_,72,76,1,1 8wal_S_,73,77,1,1 8wal_S_,74,78,1,1 8wal_S_,75,79,1,1 8wal_S_,76,79,1,1 8wal_S_,76,80,1,1 8wal_S_,77,81,1,1 8wal_S_,88,91,1,1 8wal_S_,94,108,1,1 8wal_S_,96,106,1,1 8wal_S_,98,104,1,1 8wal_S_,99,102,1,1 8wal_S_,99,103,1,1 8wal_S_,105,145,1,1 8wal_S_,107,143,1,1 8wal_S_,111,113,1,1 8wal_S_,111,139,1,1 8wal_S_,115,118,1,1 8wal_S_,120,136,1,1 8wal_S_,124,126,1,1 8wal_S_,126,129,1,1 8wal_S_,126,132,1,1 8wal_S_,128,130,1,1 8wal_S_,149,174,1,1 8wal_S_,152,154,1,1 8wal_S_,152,155,1,1 8wal_S_,152,156,1,1 8wal_S_,153,157,1,1 8wal_S_,154,158,1,1 8wal_S_,155,159,1,1 8wal_S_,156,160,1,1 8wal_S_,157,161,1,1 8wal_S_,159,162,1,1 8wal_S_,159,165,1,1 8wal_S_,162,165,1,1 8wal_S_,163,165,1,1 8wal_S_,164,166,1,1 8wal_S_,168,170,1,1 8wal_S_,168,171,1,1 8wal_S_,169,173,1,1 8wal_S_,170,174,1,1 8wal_S_,171,175,1,1 8wal_S_,172,176,1,1