C131312213233313231313231323232132313231313232233132333132311331323133313232221   >>    C13131221323331323131323132323213231323131323223313233313231133132313331323222   <<    C131312213233313231313231323232132313231313232233132333132311331323133313232223   >>      C131312213233313231313231323232132313231313232233132333132311331323133313232222   >>