C1111121111331311211331333133313331211111333133313331331122331121   >>    C111112111133131121133133313331333121111133313331333133112233112   <<    C1111121111331311211331333133313331211111333133313331331122331123   >>      C1111121111331311211331333133313331211111333133313331331122331122   >>