C1311213331333132332133313331333133313331333132313331311223312111133112322311   >>    C131121333133313233213331333133313331333133313231333131122331211113311232231   <<    C1311213331333132332133313331333133313331333132313331311223312111133112322313   >>      C1311213331333132332133313331333133313331333132313331311223312111133112322312   >>