C31232233133313221211113313113313331333133313113131211113313113313123232211   >>    C3123223313331322121111331311331333133313331311313121111331311331312323221   <<    C31232233133313221211113313113313331333133313113131211113313113313123232213   >>      C31232233133313221211113313113313331333133313113131211113313113313123232212   >>