pair,contact1,contact2,flow1,flow2 1k9m_V_,1,10,1,1 1k9m_V_,3,7,1,1 1k9m_V_,3,8,1,1 1k9m_V_,3,27,1,1 1k9m_V_,4,27,1,1 1k9m_V_,5,41,1,1 1k9m_V_,5,51,1,1 1k9m_V_,6,8,1,1 1k9m_V_,6,51,1,1 1k9m_V_,13,14,1,1 1k9m_V_,16,28,1,1 1k9m_V_,18,26,1,1 1k9m_V_,20,23,1,1 1k9m_V_,20,24,1,1 1k9m_V_,20,26,1,1 1k9m_V_,22,24,1,1 1k9m_V_,29,30,1,1 1k9m_V_,30,33,1,1 1k9m_V_,30,34,1,1 1k9m_V_,31,35,1,1 1k9m_V_,32,36,1,1 1k9m_V_,33,37,1,1 1k9m_V_,34,38,1,1 1k9m_V_,36,41,1,1 1k9m_V_,37,40,1,1 1k9m_V_,42,45,1,1 1k9m_V_,43,46,1,1 1k9m_V_,46,49,1,1 1k9m_V_,47,53,1,1 1k9m_V_,49,53,1,1