This demonstrative can be used alone, as a pronoun. It is used as a demonstrative for plural nouns of either grammatical gender. In this capacity it precedes the noun, with the genitival adjective n in between, e.g. "these feet" is nf n rdw (literally "this of feet").
There is a more colloquial variant: nf3
Allen, Middle Egyptian
Faulkner, A Concise Dictionary of Middle Egyptian