C2122121212121133132213231313231313231323223313231322331322331211   >>    C212212121212113313221323131323131323132322331323132233132233121   <<    C2122121212121133132213231313231313231323223313231322331322331213   >>      C2122121212121133132213231313231313231323223313231322331322331212   >>