C1311213331333132332133313331333133313121111331333133313231323312121   >>    C131121333133313233213331333133313331312111133133313331323132331212   <<    C1311213331333132332133313331333133313121111331333133313231323312123   >>      C1311213331333132332133313331333133313121111331333133313231323312122   >>