C1231321123223331211111131211113313331333132313331333112233232112112322221331   >>    C123132112322333121111113121111331333133313231333133311223323211211232222133   <<    C1231321123223331211111131211113313331333132313331333112233232112112322221333   >>      C1231321123223331211111131211113313331333132313331333112233232112112322221332   >>