C2122121212121133132213231313231323131323223313231322331313233313232233111   >>    C212212121212113313221323131323132313132322331323132233131323331323223311   <<    C2122121212121133132213231313231323131323223313231322331313233313232233113   >>      C2122121212121133132213231313231323131323223313231322331313233313232233112   >>