This is an irregular verb. It follows the conjugation pattern of the verb tener.
PresentPresente
Esta caja contiene fotos antiguas de la familia.
This box contains old family photos.
PreteritePretérito indefinido
El público contuvo la respiración durante el salto.
The audience held its breath during the jump.
FutureFuturo
El nuevo menú contendrá platos vegetarianos.
The new menu will contain vegetarian dishes.