C12313211232233312111111312111133133313331323321312313223133322331   >>    C1231321123223331211111131211113313331333132332131231322313332233   <<    C12313211232233312111111312111133133313331323321312313223133322333   >>      C12313211232233312111111312111133133313331323321312313223133322332   >>