C1311213331333132332133313331333133313331333312111133133313222131   >>    C131121333133313233213331333133313331333133331211113313331322213   <<    C1311213331333132332133313331333133313331333312111133133313222133   >>      C1311213331333132332133313331333133313331333312111133133313222132   >>