deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE
Copying from Coulson —
Roots before /yak, by kGitica, get no /guNa and no /vRddhi.
R ऋ-enders replace with ri रि by !! or with ar अर् by !! — **kriyate क्रियते
(i इ u उ)-enders lengthen by !! — **cIyate चीयते, **zrUyate श्रूयते
RR ॠ-enders make Ir ईर् — **saGkIrNa- सङ्कीर्णॱ
but Ur ऊर् after /pu — **ApUryamANa- आपूर्यमाणॱ