pair,contact1,contact2,flow1,flow2 6zxg_f_,5,7,1,1 6zxg_f_,13,16,1,1 6zxg_f_,15,18,1,1 6zxg_f_,18,25,1,1 6zxg_f_,20,23,1,1 6zxg_f_,22,24,1,1 6zxg_f_,29,31,1,1 6zxg_f_,29,38,1,1 6zxg_f_,33,34,1,1 6zxg_f_,41,48,1,1 6zxg_f_,43,46,1,1 6zxg_f_,45,46,1,1 6zxg_f_,45,57,1,1 6zxg_f_,47,56,1,1 6zxg_f_,49,53,1,1 6zxg_f_,49,54,1,1 6zxg_f_,53,55,1,1