C11111333133313232233133313331333133313231322321111331311331322311   >>    C1111133313331323223313331333133313331323132232111133131133132231   <<    C11111333133313232233133313331333133313231322321111331311331322313   >>      C11111333133313232233133313331333133313231322321111331311331322312   >>