C1231321123223331211111131211113313331333133313223223312223132311   >>    C123132112322333121111113121111331333133313331322322331222313231   <<    C1231321123223331211111131211113313331333133313223223312223132313   >>      C1231321123223331211111131211113313331333133313223223312223132312   >>