Usage examples (15)

• "Only Na-Dene languages have a system of verb prefixes that very closely resemble the Yeniseic," he said.
• "I systematically connect these structures in Yeniseic with the structures in modern Na-Dene," Vajda said.
• Neither Sino-Tibetan nor Na-Dene have reconstructable tone since as I said, the tones in Navajo and Chinese came later.
• For example, some words in the Na-Dene family likely represent sounds of the mother tongue more closely than their Yeniseic cognates.