C1311213331333132332133313331333133313331333133313331333131211113313112221311   >>    C131121333133313233213331333133313331333133313331333133313121111331311222131   <<    C1311213331333132332133313331333133313331333133313331333131211113313112221313   >>      C1311213331333132332133313331333133313331333133313331333131211113313112221312   >>