C11111333133313232233133313331333131133131211113313113312331323221211   >>    C1111133313331323223313331333133313113313121111331311331233132322121   <<    C11111333133313232233133313331333131133131211113313113312331323221213   >>      C11111333133313232233133313331333131133131211113313113312331323221212   >>