C11111333133313232233133313331333133313332313331211113313123232233132223311   >>    C1111133313331323223313331333133313331333231333121111331312323223313222331   <<    C11111333133313232233133313331333133313332313331211113313123232233132223313   >>      C11111333133313232233133313331333133313332313331211113313123232233132223312   >>