C1231321123223331211111131211113313331333132313331333232232112211231   >>    C123132112322333121111113121111331333133313231333133323223211221123   <<    C1231321123223331211111131211113313331333132313331333232232112211233   >>      C1231321123223331211111131211113313331333132313331333232232112211232   >>