pair,contact1,contact2,flow1,flow2 4rex_A_,1,4,1,1 4rex_A_,8,11,1,1 4rex_A_,9,27,1,1 4rex_A_,11,43,1,1 4rex_A_,14,17,1,1 4rex_A_,16,32,1,1 4rex_A_,18,30,1,1 4rex_A_,18,32,1,1 4rex_A_,20,28,1,1 4rex_A_,22,24,1,1 4rex_A_,22,25,1,1 4rex_A_,22,26,1,1 4rex_A_,29,38,1,1 4rex_A_,31,34,1,1 4rex_A_,31,36,1,1 4rex_A_,32,35,1,1 4rex_A_,38,40,1,1 4rex_A_,41,43,1,1 4rex_A_,41,44,1,1 4rex_A_,42,45,1,1 4rex_A_,43,46,1,1 4rex_A_,44,47,1,1