-mma "our", 1st person dual exlusive possessive ending: *"my and one others" (VT49:16). At an earlier conceptual phase, Tolkien apparently intended the same ending to be plural inclusive "our" (VT49:55, RS:324), cf. Mélamarimma "Our Home" (q.v.) In the latter word, Tolkien slips in i as a connecting vowel before this ending; elsewhere he used e, as in Átaremma "our Father" (see atar).
Quenya
-lma
our
-mma
our
-lwa
our
-lwa, possessive pronominal ending, 1st person pl. inclusive "our" (VT49:16), later (in exilic Quenya) used in the form #-lva, genitive -lvo in omentielvo (see -lv-).
-ngwa
our
-ngwa "our", 1st person dual inclusive possessive pronominal ending: *"thy and my", corresponding to the ending -ngwë for dual inclusive "we" (VT49:16)
menya
our
menya (pl. menyë is attested) possessive pron. "our", 1st person pl. exclusive independent possessive pronoun (VT43:19, 35). Evidently derived from the dative form men "for us" by adding the adjectival ending -ya. Compare ninya, q.v.
-lma pronominal ending "our", 1st person pl. exclusive (VT49:16), also attested (with the genitive ending -o that displaces final -a) in the word omentielmo "of our meeting" (nominative omentielma, PE17:58). Tolkien emended omentielmo to omentielvo in the Second Edition of LotR, reflecting a revision of the Quenya pronominal system (cf. VT49:38, 49, Letters:447). The cluster -lm- in the endings for inclusive "we/our" was altered to -lv- (VT43:14). In the revised system, -lma should apparently signify exclusive "our".