C12313211232233312111111312111133133313331323321312313223331233231   >>    C1231321123223331211111131211113313331333132332131231322333123323   <<    C12313211232233312111111312111133133313331323321312313223331233233   >>      C12313211232233312111111312111133133313331323321312313223331233232   >>