C1231321123223331211111131211113313331333133313223223312221121123121   >>    C123132112322333121111113121111331333133313331322322331222112112312   <<    C1231321123223331211111131211113313331333133313223223312221121123123   >>      C1231321123223331211111131211113313331333133313223223312221121123122   >>