C1231321123223331211111131211113313331333132313331333112233232112131221311   >>    C123132112322333121111113121111331333133313231333133311223323211213122131   <<    C1231321123223331211111131211113313331333132313331333112233232112131221313   >>      C1231321123223331211111131211113313331333132313331333112233232112131221312   >>