C1311213331333132332133313331333133313121111331333133313231332321   >>    C131121333133313233213331333133313331312111133133313331323133232   <<    C1311213331333132332133313331333133313121111331333133313231332323   >>      C1311213331333132332133313331333133313121111331333133313231332322   >>