In this exercise, you are challenged to distinguish between aspiration of s and what happens to s after the article where you would normally expect aspiration.

Aspiration of s is indicated by adding a h, e.g:
* mo sháith 'my fill, enough'.

But after the singular article you prefix a t to feminine nouns (where you would normally aspirate), e.g:
* an tsráid, ar an tsráid.

In Standard Irish, you should make no change to masculine nouns, e.g:
* an sac, sa sac, as an sac.