C313212111133131211331333133313331333133311233133313233313223113313112211221   >>    C31321211113313121133133313331333133313331123313331323331322311331311221122   <<    C313212111133131211331333133313331333133311233133313233313223113313112211223   >>      C313212111133131211331333133313331333133311233133313233313223113313112211222   >>