C313212111133131211331333133313331311331333133313221323112211221   >>    C31321211113313121133133313331333131133133313331322132311221122   <<    C313212111133131211331333133313331311331333133313221323112211223   >>      C313212111133131211331333133313331311331333133313221323112211222   >>