Dear Jon,

Here are some lists I found in the Padamaalaa:

For:

> yuvan (young man)
> brahman (god)
> raajaan (king)
> attan (self)
> san (dog)

See Pariccheda V: masculines ending in "aa" (nom. sing.):

"raajaa brahmaa sakhaa attaa, aatumaa saa pumaa rahaa.
da.lhadhammaa ca paccakkha-dhammaa ca viva.tacchadaa..
vattahaa ca tathaa vutta-siraa ceva yuvaapi ca.
maghava addha muddhaadi, vi~n~naatabbaa vibhaavinaa.."

For:

> bhava.m

See Pariccheda VI: masculines ending in the niggahiita (nom. sing.):

" ``bhava.m kara.m araha.m sa.m, maha.m'' iti padaani tu."

For:

> kamman

See Pariccheda IX: neuters ending in the niggahiita (nom. sing.):

" ``camma.m vesma''ntiaadiini, ekadhaayeva bhijjare.
``kamma.m thaama.m gu.nava''nti-aadiini tu anekadhaa.."

The two lists above are incomplete but you can add "ghamma.m" to the first
one. I think "naama.m" (or naaman) is declined in the regular way like
"citta.m" or "bhuuta.m".

Note that Aggava.msa doesn't use stem forms ending in -n like "kamman" or
"yuvan". Instead he uses "kamma" or "yuva", etc. to denote the stem. The -n
is Sanskrit projected onto Pali.

Best wishes,
Jim