deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE
Before /khar consonants, n न् will change into —
J ञ् before z श् j ज् jh झ् by stozzcunAzcuH
N ण् before D ड् Dh ढ् by STunASTuH
Mz ंश् before c च् ch छ् by nazchavyapraz... and monusvAraH and stozzcunAzcuH
MS ंष् before T ट् Th ठ् by nazchavyapraz... and monusvAraH and STunASTuH
Ms ंस् before t त् th थ् by nazchavyapraz... and monusvAraH
n न् stays n न् before S ष् because toSSi debars STunASTuH
n न् stays n न् before the other consonants by no rules
n न् + z श् always changes n न् into J ञ्, but the z श् can either stay as written above, turn into ch छ्, or turn into cch च्छ्. By zituk.
The relevant rules are —
Before t त् th थ् c च् ch छ् T ट् Th ठ्, the letter n न् becomes Ms ंस् by rules nazchavyapraz... and monusvAraH. That s स् will then maybe be affected by stozzcunAzcuH or STunASTuH.
Before j ज् jh झ् D ड् Dh ढ्, the n न् will be affected by stozzcunAzcuH or STunASTuH.
How come there is no STunASTuH in n न् + S ष्?
Because of the exception toSSi.