C1231321123223331211111131211113313331333132322131213223322232211   >>    C123132112322333121111113121111331333133313232213121322332223221   <<    C1231321123223331211111131211113313331333132322131213223322232213   >>      C1231321123223331211111131211113313331333132322131213223322232212   >>