C1231321123223331211111131211113313331333132313332323232222212213231   >>    C123132112322333121111113121111331333133313231333232323222221221323   <<    C1231321123223331211111131211113313331333132313332323232222212213233   >>      C1231321123223331211111131211113313331333132313332323232222212213232   >>