pair,contact1,contact2,flow1,flow2 3ccu_1_,2,7,1,1 3ccu_1_,4,7,1,1 3ccu_1_,5,8,1,1 3ccu_1_,8,11,1,1 3ccu_1_,10,12,1,1 3ccu_1_,15,16,1,1 3ccu_1_,15,29,1,1 3ccu_1_,16,26,1,1 3ccu_1_,17,27,1,1 3ccu_1_,18,23,1,1 3ccu_1_,19,23,1,1 3ccu_1_,19,24,1,1 3ccu_1_,21,42,1,1 3ccu_1_,26,35,1,1 3ccu_1_,28,32,1,1 3ccu_1_,28,33,1,1 3ccu_1_,29,32,1,1 3ccu_1_,34,38,1,1 3ccu_1_,34,39,1,1 3ccu_1_,36,46,1,1 3ccu_1_,37,46,1,1 3ccu_1_,38,41,1,1 3ccu_1_,38,42,1,1 3ccu_1_,42,44,1,1 3ccu_1_,48,51,1,1 3ccu_1_,49,52,1,1 3ccu_1_,52,56,1,1 3ccu_1_,53,56,1,1