deriv SD cv (1242) ashtadhyayi.com hei.de L 1242 ETT STT a 6.4.161 ALPH OLDHOMEPAGE NEWHOMEPAGE

ra:: Rto halAder laghoH

र‌ ऋतो हलादेर्लघोः ONPANINI 64161

Replace (consonant plus light R ऋ) with r र् (before /iSThan /imanic /Iyas).

pRthu- पृथुॱ + /iSThan from pRthvAdibhya::...
→ pRth- पृथ् + /iSThan by <6 TeHx
→ prath- प्रथ् + /iSThan by this rule
→ !**prathiSTha- प्रथिष्ठॱ

pRthu- पृथुॱ + /imanic → **prathiman- प्रथिमन्

pRthu- पृथुॱ + /Iyas → !**prathIyas- प्रथीयस्

Adding /su to them —

!**prathiSThas प्रथिष्ठस्

!**prathIyAn प्रथीयान्

**prathimA प्रथिमा