Where does “dwitíyas” come from?

dwitíyas (Proto-Indo-Aryan) comes from Proto-Indo-Iranian dwitíyas, from Proto-Indo-European dwitíyos, from Proto-Indo-European dwi-, from Proto-Indo-European dwóh₁ — two.

Ancestry of “dwitíyas”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniandwitíyassecond
2Proto-Indo-Europeandwitíyos—
3Proto-Indo-Europeandwi-two; apart, asunder
4Proto-Indo-Europeandwóh₁two

Words derived from “dwitíyas”

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Indo-European dwi- →Every word from Proto-Indo-European dwitíyos →