Pensar (to think)
e - ie
Pedir (to ask for)
e - ie
Cerrar (to close)
e - ie
Empezar (to begin)
e - ie
Entender (to understand)
e - ie
Preferir (to prefer)
e - ie
Querer (to want, to love)
e - ie
Tener (to have)
e - ie
Venir (to come)
e - ie
Almorzar (to have lunch)
o - ue
Costar (to cost)
o - ue
Dormir (to sleep)
o - ue
Encontrar (to find)
o - ue
Poder (to be able to, can)
o - ue
Repitir (to repeat)
e - i
Servir (to serve)
e - i
Decir (to say)
e - i
Seguir (to follow)
e - i