Where does “[[in]] [[zuiskēn]]” come from?

[[in]] [[zuiskēn]] (Old High German) comes from Old High German zuiski, from Old High German zwēne, from Proto-West Germanic twai-, from Proto-Germanic twai, from Proto-Indo-European dwóh₁ — two.

Ancestry of “[[in]] [[zuiskēn]]”, step by step

StepLanguageWordMeaning
1Old High Germanzuiskitwofold
2Old High Germanzwēnetwo
3Proto-West Germanictwai-two
4Proto-Germanictwaitwo
5Proto-Indo-Europeandwóh₁two

Words derived from “[[in]] [[zuiskēn]]”

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Germanic twai →Every word from Proto-West Germanic twai- →