C11112331333132311331333133313331333132332311331333133313112233121   >>    C1111233133313231133133313331333133313233231133133313331311223312   <<    C11112331333132311331333133313331333132332311331333133313112233123   >>      C11112331333132311331333133313331333132332311331333133313112233122   >>