C11111333133313232233133313331333131133131211113311233132323231   >>    C1111133313331323223313331333133313113313121111331123313232323   <<    C11111333133313232233133313331333131133131211113311233132323233   >>      C11111333133313232233133313331333131133131211113311233132323232   >>