C31232233133313221211113313331333133313113311331333132313133313331323311211   >>    C3123223313331322121111331333133313331311331133133313231313331333132331121   <<    C31232233133313221211113313331333133313113311331333132313133313331323311213   >>      C31232233133313221211113313331333133313113311331333132313133313331323311212   >>