C1111121111331311211331333133313331333133313231333133313331311212112121   >>    C111112111133131121133133313331333133313331323133313331333131121211212   <<    C1111121111331311211331333133313331333133313231333133313331311212112123   >>      C1111121111331311211331333133313331333133313231333133313331311212112122   >>