C1212132133313223313133313113313121111331311331311331323211231211   >>    C121213213331322331313331311331312111133131133131133132321123121   <<    C1212132133313223313133313113313121111331311331311331323211231213   >>      C1212132133313223313133313113313121111331311331311331323211231212   >>