C1231321123223331211111131211113313331333133313223223312221321231   >>    C123132112322333121111113121111331333133313331322322331222132123   <<    C1231321123223331211111131211113313331333133313223223312221321233   >>      C1231321123223331211111131211113313331333133313223223312221321232   >>