With "IE":
* Bien (good)
* Vie (life)
* Fille (girl)
* Pierre (stone)
* Fier (proud)
* Ciel (sky)
* Vieille (old woman)
* Tiens (hold)
* Pied (foot)
* Lieu (place)
* Gâteau (cake)
* Prière (prayer)
* Ami(e) (friend)
* Pie (magpie)
* Siège (seat)
* Science (science)
With "AI":
* Aïe (ouch)
* Faire (to do)
* Laid (ugly)
* Paie (pay)
* Sais (know)
* Craie (chalk)
* J'ai (I have)
* J'avais (I had)
* J'irai (I will go)
* J'allais (I was going)
* Aile (wing)
* Haie (hedge)
This is not an exhaustive list, but it provides a good starting point. Keep in mind that the pronunciation of "IE" and "AI" can vary depending on the word and the surrounding letters.