C1231321123223331211111131211113313331333132313331333112233232112211231311221   >>    C123132112322333121111113121111331333133313231333133311223323211221123131122   <<    C1231321123223331211111131211113313331333132313331333112233232112211231311223   >>      C1231321123223331211111131211113313331333132313331333112233232112211231311222   >>