C1231321123223331211111131211113313331333133313223223312231121131231   >>    C123132112322333121111113121111331333133313331322322331223112113123   <<    C1231321123223331211111131211113313331333133313223223312231121131233   >>      C1231321123223331211111131211113313331333133313223223312231121131232   >>