C1231321123223331211111131211113313331333133313223223312212111231221   >>    C123132112322333121111113121111331333133313331322322331221211123122   <<    C1231321123223331211111131211113313331333133313223223312212111231223   >>      C1231321123223331211111131211113313331333133313223223312212111231222   >>