Qenya
ti
pronoun. *that by you
ti
pronoun. they
toi
pronoun. they
tí
pronoun. them
he
pronoun. they
se
pronoun. they
sen
pronoun. them
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A demonstrative appearing in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 associated with the familiar 2nd person ᴹQ. ke “you” (PE23/96, 98-99), hence used to refer to the place of the person being addressed = “✱that by you”.
Neo-Quenya: In earlier pronominal charts from this period, ᴹQ. ti was initially used for 3rd person pl. “they”, but in later writings this became te. Meanwhile, the familiar “you” later became tye derived from ✶ki. Thus I think ti remains plausible as an (obscure) second person demonstrative “that by you”, but I would use it sparingly compared to the more ordinary ta “that”.
Conceptual Development: The Qenya Lexicon of the 1910s had ᴱQ. ena “that by you” derived from the early root ᴱ√E of similar meaning (QL/34).