C21221212121211331322132313132313132313232233132313223313233313231333131322311   >>    C2122121212121133132213231313231313231323223313231322331323331323133313132231   <<    C21221212121211331322132313132313132313232233132313223313233313231333131322313   >>      C21221212121211331322132313132313132313232233132313223313233313231333131322312   >>