C21221212121211331322132313132313132313232233132313223313231323321323211   >>    C2122121212121133132213231313231313231323223313231322331323132332132321   <<    C21221212121211331322132313132313132313232233132313223313231323321323213   >>      C21221212121211331322132313132313132313232233132313223313231323321323212   >>