C1231321123223331211111131211113313331333133313223223312232221121   >>    C123132112322333121111113121111331333133313331322322331223222112   <<    C1231321123223331211111131211113313331333133313223223312232221123   >>      C1231321123223331211111131211113313331333133313223223312232221122   >>