C1231321123223331211111131211113313331333133313223223312213113213311   >>    C123132112322333121111113121111331333133313331322322331221311321331   <<    C1231321123223331211111131211113313331333133313223223312213113213313   >>      C1231321123223331211111131211113313331333133313223223312213113213312   >>