C1231321123223331211111131211113313331333132313331333112233232112312212223231   >>    C123132112322333121111113121111331333133313231333133311223323211231221222323   <<    C1231321123223331211111131211113313331333132313331333112233232112312212223233   >>      C1231321123223331211111131211113313331333132313331333112233232112312212223232   >>