C1231321123223331211111131211113313331333133313223223312232211313111   >>    C123132112322333121111113121111331333133313331322322331223221131311   <<    C1231321123223331211111131211113313331333133313223223312232211313113   >>      C1231321123223331211111131211113313331333133313223223312232211313112   >>