C1231321123223331211111131211113313331333133313223223312231122123323321   >>    C123132112322333121111113121111331333133313331322322331223112212332332   <<    C1231321123223331211111131211113313331333133313223223312231122123323323   >>      C1231321123223331211111131211113313331333133313223223312231122123323322   >>