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diva::ut दिव‌उत् ONPANINI 61131

/div- f becomes /dyu- when padafinal.

The base /div- means "sky". When it is /pada by svAdiSvasarv... this rule applies —

/div- + /bhis → dyubhis द्युभिस्

/div- + /sup' → dyuSu द्युषु

Also in compounds —

!**dyucaraH द्युचरः "skywalker"

!**dyuspRk द्युस्पृक् "skyscraper"

/div- plus /su makes **dyaus द्यौस् —

/div- + /su
→ di दि + au औ + /su by diva::aut
→ **dyaus द्यौस्

/div- stays before the other strong endings —

/div- + /jas → divaH दिवः

/div- + /jas → divau दिवौ

and when whimpy —

/div- + /Gi → !**divi दिवि

**divispRk दिविस्पृक् "sky-touching", keeping /Gi by tatpuruSek...

!**divicaraH दिविचरः "skywalker"

When /div- is ifc and neuter, it becomes /dyu-, but not by this rule — see **sudyu सुद्यु.