C1231321123223331211111131211113313331333132313331333232232112231   >>    C123132112322333121111113121111331333133313231333133323223211223   <<    C1231321123223331211111131211113313331333132313331333232232112233   >>      C1231321123223331211111131211113313331333132313331333232232112232   >>