pair,contact1,contact2,flow1,flow2 1g2c_B_,4,6,1,1 1g2c_B_,5,9,1,1 1g2c_B_,6,10,1,1 1g2c_B_,7,11,1,1 1g2c_B_,8,12,1,1 1g2c_B_,9,13,1,1 1g2c_B_,10,14,1,1 1g2c_B_,11,15,1,1 1g2c_B_,12,16,1,1 1g2c_B_,13,17,1,1 1g2c_B_,14,18,1,1 1g2c_B_,15,19,1,1 1g2c_B_,16,19,1,1 1g2c_B_,16,20,1,1 1g2c_B_,17,21,1,1 1g2c_B_,18,22,1,1 1g2c_B_,19,22,1,1 1g2c_B_,19,23,1,1 1g2c_B_,20,24,1,1 1g2c_B_,21,25,1,1 1g2c_B_,22,26,1,1 1g2c_B_,23,27,1,1 1g2c_B_,24,28,1,1 1g2c_B_,25,29,1,1 1g2c_B_,26,30,1,1 1g2c_B_,27,31,1,1 1g2c_B_,28,32,1,1 1g2c_B_,29,33,1,1 1g2c_B_,30,34,1,1 1g2c_B_,31,35,1,1 1g2c_B_,33,36,1,1 1g2c_B_,34,37,1,1