"Nineteen, eighteen, seventeen"
Translation:Náhástʼéí tsʼáadah, tseebíí tsʼáadah, tsostsʼid tsʼáadah
On every available online resource that I've checked, ts'áadah is always suffixed to the numeral. It is never written as a separate word. I'm reporting it as either a grammatical mistake or a typo.