C1231321123223331211111131211113313331333133313223223312223313121121   >>    C123132112322333121111113121111331333133313331322322331222331312112   <<    C1231321123223331211111131211113313331333133313223223312223313121123   >>      C1231321123223331211111131211113313331333133313223223312223313121122   >>