C1231321123223331211111131211113313331333133313223223312221333222211   >>    C123132112322333121111113121111331333133313331322322331222133322221   <<    C1231321123223331211111131211113313331333133313223223312221333222213   >>      C1231321123223331211111131211113313331333133313223223312221333222212   >>