Because Lwaitel is pro-drop, you can also just say Naumku.
A personal pronoun can be used with a noun phrase. Also, since my name is not a Lwaitel word, it's written in its original alphabet with the Lwaitel approximation above it.
An can be used as a pronoun. Again, you could also just say naun.
An can also be followed by a noun phrase.
One could also say Myau naumi, if the cat isn't something one plans on talking about much in this conversation (but not *Myau naun or *An myau naumi, because the determiner has to agree with the verb).
An is used with proper nouns as well as common nouns.
If it's clear from context that one is talking about multiple cats, íhe can be omitted.
If there's a number, then it's possible to tell that it's plural already, so one would not add íhe.
Literally "the cats are five". Numbers can be used as predicate adjectives.
Indefiniteness is usually marked on the verb. The determiner is used even on indefinite nouns.
If indefiniteness can't be marked on the verb, the determiner swasye is used.
Úni mumwe is the noun phrase here; if úni was modifying the verb, it would be kíku úni nga mumwe.
*Úni iki úni mumwe would be double negation, so nga is required here.
Saki takes inalienable possession, and is required to be possessed; one couldn't just say *An saki swa-n húkyes. Because ku is being used as a pronoun, a noun phrase is not required.
Or ...lwe húkyes saki.... Not *An myau lwe húkyes sakipen naun; when used with lwe, the noun doesn't take possessive marking.