C1231321123223331211111131211113313331333132313331333323223322131212231   >>    C123132112322333121111113121111331333133313231333133332322332213121223   <<    C1231321123223331211111131211113313331333132313331333323223322131212233   >>      C1231321123223331211111131211113313331333132313331333323223322131212232   >>