C1212132133313223313133313113313121111331311331311331323133313231333132322221   >>    C121213213331322331313331311331312111133131133131133132313331323133313232222   <<    C1212132133313223313133313113313121111331311331311331323133313231333132322223   >>      C1212132133313223313133313113313121111331311331311331323133313231333132322222   >>