C31232233133313221211113313331333133313311211231211113313331121131131223321   >>    C3123223313331322121111331333133313331331121123121111331333112113113122332   <<    C31232233133313221211113313331333133313311211231211113313331121131131223323   >>      C31232233133313221211113313331333133313311211231211113313331121131131223322   >>