C1111121111331311211331333133313121111331322133313231323221212121   >>    C111112111133131121133133313331312111133132213331323132322121212   <<    C1111121111331311211331333133313121111331322133313231323221212123   >>      C1111121111331311211331333133313121111331322133313231323221212122   >>