C22213331333133313112331323133313331333133313223331211113313123211231   >>    C2221333133313331311233132313331333133313331322333121111331312321123   <<    C22213331333133313112331323133313331333133313223331211113313123211233   >>      C22213331333133313112331323133313331333133313223331211113313123211232   >>