Kumar Vadaparthy has explained how each anunAsikam goes with the rest
of the consonants in that group. As he says, "the notion of putting
consonants next together with "zero" (sunna) is a violation of sanskrit's
pure phonetic rules." However, I would slightly rephrase that sentence
to imply that the "rules" are, once again, not top down, dictated by some
authorities, but only codification of "observed" phenomenon.
In giving the example, he made a typographical error. Take the telugu words
kunDa, and kinda. These should be properly written as "kuNDa", and "kinda".
Similarly, it is "paNTa"(crop), but "pantulu"(teacher); and "gaNTa"(bell) but
"gantulu"(jumps). It is for this reason we see "pancAngamu" written
as it is written traditionally (cop-out, I didn't remember the
proper symbols for those consonants and vottulu). I think approximately
it would be "pa~ncA~mgamu". (correction appreciated).
This grammatical rule - it is more a statement than a rule - is called
"kaTapayAdi sUtramu". In a starnge way, the name crops up again for the
codification (or mnemonification) of the 72 mELakarta rAgas, according to
the scheme laid down by venkaTamakhi, a predecessor of tyAgarAju.
In the primer on Carnatic Music by Ramesh Mahadevan (sent to me by a
friend; a link to it can be found on Sanka Ramakrishna's homepage, one
of the better homepages I have seen), he says that at the time
venkaTamakhi laid down the system, not all of the rAgas were popular,
or in vogue, so he could name them easily to fit the scheme he laid out.
Obviously, some of the established (at that time) rAgas didn't fit the
scheme. So he attached suffixes to them such as "dheera", hanumat-", to
make them comply. This is my guess. (Actually I may have heard this
somewhere, can't tell).
Ramakrishna