C2122121212121133132213231313231323131323223313231322331323132323312121   >>    C212212121212113313221323131323132313132322331323132233132313232331212   <<    C2122121212121133132213231313231323131323223313231322331323132323312123   >>      C2122121212121133132213231313231323131323223313231322331323132323312122   >>