C1111121111331311211331333133313331333133313231333133313223313332211   >>    C111112111133131121133133313331333133313331323133313331322331333221   <<    C1111121111331311211331333133313331333133313231333133313223313332213   >>      C1111121111331311211331333133313331333133313231333133313223313332212   >>