Analogy (-ant>-a`nt and -arx>-a`rx to match other
plural infl).
X>0/C_$
C>0/VC_CV (in many C-clusters)
> >
> > So, txa`>xa`
t/d/dh all >t/_s
t>s/_s
s>0/C+continuant_ (leaves mora)
(f, s, xj, x, xv, m, n, nj, mv, l, r)
unattached mora>0 after syl with unmarked tone
unattached mora moves to previous syl (if possible),
lengthening vowel
This explains fem in -(a)x with no -s, all n-stems,
t-stems, etc.
s-aorists ending in sounds causing this lengthening
(when last syl of stem marked)
bha`ndh(x)s->bha:`ns
analogy causes this in all s-aorists
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