C21221212121211331322132313132313231313232233132313223313231333133313331322111   >>    C2122121212121133132213231313231323131323223313231322331323133313331333132211   <<    C21221212121211331322132313132313231313232233132313223313231333133313331322113   >>      C21221212121211331322132313132313231313232233132313223313231333133313331322112   >>