C31232233133313221211113313331333133313113311331333133313331333112211232211   >>    C3123223313331322121111331333133313331311331133133313331333133311221123221   <<    C31232233133313221211113313331333133313113311331333133313331333112211232213   >>      C31232233133313221211113313331333133313113311331333133313331333112211232212   >>