To begin
Empezar (ie)
To understand
Entender (ie)
To think/plan
Pensar (ie)
To confess
Confesar (ie)
To lose
Perder (ie)
To defend
Defender (ie)
To close
Cerrar (ie)
To be able to
Poder (ue)
To eat lunch
Almorzar (ue)
To play
Jugar (ue)
To remember
Recordar (ue)
To sleep
Dormir (ue)
To fly
Volar (ue)
To return (person)
Volver (ue)
To show
Mostrar (ue)
To find/meet
Encontrar (ue)
To serve
Servir (i)
To repeat
Repetir (i)
To order
Pedir (i)