C1231321123223331211111131211113313331333133313223223312221323321   >>    C123132112322333121111113121111331333133313331322322331222132332   <<    C1231321123223331211111131211113313331333133313223223312221323323   >>      C1231321123223331211111131211113313331333133313223223312221323322   >>