C13132313123113313223313133313231133132333132311113313232233112111   >>    C1313231312311331322331313331323113313233313231111331323223311211   <<    C13132313123113313223313133313231133132333132311113313232233112113   >>      C13132313123113313223313133313231133132333132311113313232233112112   >>