Terms

savarga

zavarga or savarga Cologne Sanskrit Dictionary: m. the sibilating class of letters i.e. the three sibilants and the letter {h} -------------------
sha, shha, sa, ha
श ष स ह
 
Some systems e.g. Aryabhatta limit the sibililants or 3 coronal fricatives to
श ष स
Sha, SHA, Sa
sha sa sa
 
Other systems, eg. the tantric school expands this to 5 syllables
 
श ष स ह क्ष
sha, shha, sa, ha, Ksha = 5 Verities
Jnana, Kriya, Iccha, Shakti, Shiva
 
Others expand this to 6:
sha, shha, sa, ha, La, kshha
श ष स ह ळ क्ष
The Harvard Kyoto transliteration combines the pavarga - yavarga and savarga in one group.
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