C313212111133131211331333133313331333133311233133313113322332221   >>    C31321211113313121133133313331333133313331123313331311332233222   <<    C313212111133131211331333133313331333133311233133313113322332223   >>      C313212111133131211331333133313331333133311233133313113322332222   >>