(the third-person plural nominative) A group of entities previously mentioned.

(US dialectal) There (especially as an expletive subject of be).

(now Southern England dialect or nonstandard) The, those. / (US dialects, including African-American Vernacular) Their.

Misspelling of there.

Contraction of they are.

Misspelling of their.

they have

They had. / They would.

Contraction of they will. / Contraction of they shall.

Turbulent changes do not affect reality on a deeper level other than to cement the status quo. / A change of heart must accompany experience before lasting change occurs.