@redu examples

Rule ekAcodvepr... says that we have to reduplicate "the first one-vowel part".

The first one-vowel parts of kR कृ is kR कृ —

kR कृ + /liT
→ kR कृ + kR कृ + /liT by liTidhAtor...
→ cR चृ + kR कृ + /liT by kuhozcuH
→ car चर् + kR कृ + /liT by urat and uraNraparaH
→ ca च + kR कृ + /liT by halAdizzeSaH
→ !**cakR- चकृॱ + /liT

/zIG + /liT
→ zI शी + zI शी + /liT by liTidhAtor...
→ zi शि + zI शी + /liT by hrasvaH
→ !**zizI- शिशीॱ + /liT

/zru + /liT
→ !**zuzru- शुश्रुॱ + /liT

sru स्रु + /liT
→ !**susru- सुस्रुॱ + /liT (no /Satvam here)

zcu श्चु "ooze, drip" + /liT
→ **cuzcu- चुश्चुॱ + /liT

gam गम् before /liT
→ ga ग + gam गम् by liTidhAtor...
→ **jagam- जगम् by kuhozcuH

The first one-vowel part of jAgR जागृ is jA जा —

/jAgR + /liT /tip
→ jAgR जागृ + /Nal by parasmaipad...
→ jajAgR जजागृ + /Nal by hrasvaH
→ !**jajAgAra जजागार "he woke up", like **cakAra चकार

iS इष् + /liT /tip OR /mip
→ iS इष् + /Nal
→ eS एष् + /Nal by pugantalagh...
→ i इ + eS एष् + /Nal by liTidhAtor... ff
→ iy इय् + eS एष् + /Nal by abhyAsasyAs...
→ !**iyeSa इयेष "he / she / I went"

iS इष् + iS इष् + /atus
→ i इ + iS इष् + /atus
→ i इ + iS इष् + /atus
→ (there is no gbS here because /atus is /kit by asaMyogAll...)
→ !**ISatus ईषतुस्