C111123313121111121111331333133313331323132333132313331322211231   >>    C11112331312111112111133133313331333132313233313231333132221123   <<    C111123313121111121111331333133313331323132333132313331322211233   >>      C111123313121111121111331333133313331323132333132313331322211232   >>