Welsh tri

← Proto-Brythonic *tri (inherited)

← Proto-Celtic *trīs (inherited)

← Proto-Indo-European *tréyes (inherited)

→ Welsh triongl (prefix)

→ Welsh triphlyg (affix)

→ Welsh tri ar ddeg (compound)

→ Welsh un deg tri (compound)

→ Welsh trigain (compound)

→ Welsh tri ar hugain (compound)

→ Welsh dau ddeg tri (compound)

→ Welsh tri deg un (compound)

→ Welsh tri deg (compound)

→ Cornish deg ha tri ugens (compound)

→ Cornish tri ugens (compound)