C1231321123223331211111131211113313331333132313331333112233232112121211121221   >>    C123132112322333121111113121111331333133313231333133311223323211212121112122   <<    C1231321123223331211111131211113313331333132313331333112233232112121211121223   >>      C1231321123223331211111131211113313331333132313331333112233232112121211121222   >>