pair,contact1,contact2,flow1,flow2 2dsq_C_,2,40,1,1 2dsq_C_,4,35,1,1 2dsq_C_,4,36,1,1 2dsq_C_,5,9,1,1 2dsq_C_,6,9,1,1 2dsq_C_,6,10,1,1 2dsq_C_,7,11,1,1 2dsq_C_,8,12,1,1 2dsq_C_,9,13,1,1 2dsq_C_,10,14,1,1 2dsq_C_,11,15,1,1 2dsq_C_,12,16,1,1 2dsq_C_,13,17,1,1 2dsq_C_,14,18,1,1 2dsq_C_,17,21,1,1 2dsq_C_,18,21,1,1 2dsq_C_,20,50,1,1 2dsq_C_,21,50,1,1 2dsq_C_,23,48,1,1 2dsq_C_,24,31,1,1 2dsq_C_,25,29,1,1 2dsq_C_,26,47,1,1 2dsq_C_,29,48,1,1 2dsq_C_,31,35,1,1 2dsq_C_,32,34,1,1 2dsq_C_,33,37,1,1 2dsq_C_,34,39,1,1 2dsq_C_,35,39,1,1 2dsq_C_,41,44,1,1 2dsq_C_,41,45,1,1 2dsq_C_,42,46,1,1 2dsq_C_,43,46,1,1 2dsq_C_,43,47,1,1 2dsq_C_,45,48,1,1 2dsq_C_,46,49,1,1