C31232233133313221211113313331333133313311211231211113313113313231331   >>    C3123223313331322121111331333133313331331121123121111331311331323133   <<    C31232233133313221211113313331333133313311211231211113313113313231333   >>      C31232233133313221211113313331333133313311211231211113313113313231332   >>