C1231321123223331211111131211113313331333133313223223312232213133312121   >>    C123132112322333121111113121111331333133313331322322331223221313331212   <<    C1231321123223331211111131211113313331333133313223223312232213133312123   >>      C1231321123223331211111131211113313331333133313223223312232213133312122   >>