pair,contact1,contact2,flow1,flow2 2l27_A_,1,5,1,1 2l27_A_,2,6,1,1 2l27_A_,2,30,1,1 2l27_A_,3,7,1,1 2l27_A_,3,23,1,1 2l27_A_,4,8,1,1 2l27_A_,6,9,1,1 2l27_A_,7,22,1,1 2l27_A_,7,33,1,1 2l27_A_,10,11,1,1 2l27_A_,15,17,1,1 2l27_A_,18,36,1,1 2l27_A_,19,33,1,1 2l27_A_,20,34,1,1 2l27_A_,21,69,1,1 2l27_A_,23,31,1,1 2l27_A_,25,61,1,1 2l27_A_,27,29,1,1 2l27_A_,29,75,1,1 2l27_A_,34,38,1,1 2l27_A_,34,63,1,1 2l27_A_,35,63,1,1 2l27_A_,37,63,1,1 2l27_A_,38,40,1,1 2l27_A_,38,63,1,1 2l27_A_,40,61,1,1 2l27_A_,42,59,1,1 2l27_A_,44,45,1,1 2l27_A_,47,52,1,1 2l27_A_,48,51,1,1 2l27_A_,53,80,1,1 2l27_A_,54,56,1,1 2l27_A_,54,78,1,1 2l27_A_,54,79,1,1 2l27_A_,57,77,1,1 2l27_A_,61,70,1,1 2l27_A_,64,66,1,1 2l27_A_,65,66,1,1 2l27_A_,68,69,1,1 2l27_A_,72,74,1,1 2l27_A_,75,78,1,1 2l27_A_,76,77,1,1 2l27_A_,77,79,1,1 2l27_A_,79,80,1,1