C1231321123223331211111131211113313331333133313223223312221231312111   >>    C123132112322333121111113121111331333133313331322322331222123131211   <<    C1231321123223331211111131211113313331333133313223223312221231312113   >>      C1231321123223331211111131211113313331333133313223223312221231312112   >>