C1231321123223331211111131211113313331333132313331333112233232112311121121221   >>    C123132112322333121111113121111331333133313231333133311223323211231112112122   <<    C1231321123223331211111131211113313331333132313331333112233232112311121121223   >>      C1231321123223331211111131211113313331333132313331333112233232112311121121222   >>