C31232233133313221211113313331333133313311211231211113313331121133231311   >>    C3123223313331322121111331333133313331331121123121111331333112113323131   <<    C31232233133313221211113313331333133313311211231211113313331121133231313   >>      C31232233133313221211113313331333133313311211231211113313331121133231312   >>