Quenya 

-nta

their

-nta (2) possessive 3rd person pl. pronominal ending: "their" (VT49:17). Lintienta "their speed" (PE17:58), nassentar "their true-being[s]" (PE17:175). This ending corresponds to -ntë "they" (other versions of Quenya uses -ltë for "they" and hence -lta for "their"). Also -ntya, q.v. According to VT49:17, the ending -nta appears as -inta following a consonant (other sources point to -e- rather than -i- as the connecting vowel in such cases).