C1311213331333132332133313331333133313331333312111133133313222233132231211   >>    C131121333133313233213331333133313331333133331211113313331322223313223121   <<    C1311213331333132332133313331333133313331333312111133133313222233132231213   >>      C1311213331333132332133313331333133313331333312111133133313222233132231212   >>