Proto-Sino-Tibetan *tjak ~ g-t(j)ik

→ Tibetan གཅིག (inherited)

→ Pela ta³¹ (inherited)

→ Dzongkha གཅིག (inherited)

→ Garo sa (inherited)

→ Burmese တစ် (inherited)

→ Namuyi kyî (inherited)

→ Sikkimese ཅི (inherited)

→ Chinese 一 (mention)

→ Chinese 隻 (inherited)