C11111333133313232233133313331333131133132221121111331311113311   >>    C1111133313331323223313331333133313113313222112111133131111331   <<    C11111333133313232233133313331333131133132221121111331311113313   >>      C11111333133313232233133313331333131133132221121111331311113312   >>