pair,contact1,contact2,flow1,flow2 2c2v_S_,3,6,1,1 2c2v_S_,3,7,1,1 2c2v_S_,7,12,1,1 2c2v_S_,7,13,1,1 2c2v_S_,8,12,1,1 2c2v_S_,8,13,1,1 2c2v_S_,11,13,1,1 2c2v_S_,14,16,1,1 2c2v_S_,16,28,1,1 2c2v_S_,17,28,1,1 2c2v_S_,17,29,1,1 2c2v_S_,18,58,1,1 2c2v_S_,19,27,1,1 2c2v_S_,20,56,1,1 2c2v_S_,21,24,1,1 2c2v_S_,21,25,1,1 2c2v_S_,23,46,1,1 2c2v_S_,27,43,1,1 2c2v_S_,28,31,1,1 2c2v_S_,29,33,1,1 2c2v_S_,30,34,1,1 2c2v_S_,31,35,1,1 2c2v_S_,32,36,1,1 2c2v_S_,33,37,1,1 2c2v_S_,35,38,1,1 2c2v_S_,35,39,1,1 2c2v_S_,35,42,1,1 2c2v_S_,40,42,1,1 2c2v_S_,43,45,1,1 2c2v_S_,43,46,1,1 2c2v_S_,43,47,1,1 2c2v_S_,43,48,1,1 2c2v_S_,46,48,1,1 2c2v_S_,51,53,1,1 2c2v_S_,51,54,1,1 2c2v_S_,52,55,1,1 2c2v_S_,58,61,1,1 2c2v_S_,58,62,1,1 2c2v_S_,59,63,1,1 2c2v_S_,60,64,1,1 2c2v_S_,61,65,1,1 2c2v_S_,62,65,1,1 2c2v_S_,62,66,1,1 2c2v_S_,63,67,1,1 2c2v_S_,65,69,1,1 2c2v_S_,69,72,1,1