C1231321123223331211111131211113313331333133313223223312232132333311   >>    C123132112322333121111113121111331333133313331322322331223213233331   <<    C1231321123223331211111131211113313331333133313223223312232132333313   >>      C1231321123223331211111131211113313331333133313223223312232132333312   >>