C1111121111331311211331333133313331333133313231333133313331323223313121   >>    C111112111133131121133133313331333133313331323133313331333132322331312   <<    C1111121111331311211331333133313331333133313231333133313331323223313123   >>      C1111121111331311211331333133313331333133313231333133313331323223313122   >>