sonant would be eclipsed: e.g., ár n‑arán laeṫeaṁail, our daily bread; ċuaiḋ Oisín go tír na n‑óg, Oisin went to "the land of the young."
The n is sometimes omitted when the previous word ends in n: as ar an aonaċ, or ar an n‑aonaċ, at the fair.
(b) Prepositions (except do and de) ending in a vowel prefix n to the possessive adjectives a, his, her, or their; and ár, our; le n‑a ṁáṫair, with his mother; ó n‑ár dtír, from our country.
The Insertion of t.
28. (a) The article prefixes t to a masculine noun beginning with a vowel in the nominative and accusative singular: as an t‑aṫair, the father.
(b) If a noun begins with s followed by a vowel, or by l, n, or r, the s is replaced by t after the article in the nom. and acc. feminine sing. and the genitive masculine, and sometimes in the dative singular of both genders, as an tsúil, the eye; teaċ an tsagairt, (the) house of the priest, i.e.; the priest’s house; tá siad ag teaċt ó’n tseilg, they are coming from the hunt.
(c) This replacing of s by t occurs after the words aon, one; sean, old; and other words ending in n, as aon tsealg aṁáin, one hunt.
