must underlay
Verbo irregular: underlay - underlaid- underlaid

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must underlay
you must underlay
he must underlay
we must underlay
you must underlay
they must underlay 	I must be underlaying
you must be underlaying
he must be underlaying
we must be underlaying
you must be underlaying
they must be underlaying	I must have underlaid
you must have underlaid
he must have underlaid
we must have underlaid
you must have underlaid
they must have underlaid	I must have been underlaying
you must have been underlaying
he must have been underlaying
we must have been underlaying
you must have been underlaying
they must have been underlaying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not underlay
you must not underlay
he must not underlay
we must not underlay
you must not underlay
they must not underlay 	I must not be underlaying
you must not be underlaying
he must not be underlaying
we must not be underlaying
you must not be underlaying
they must not be underlaying	I must not have underlaid
you must not have underlaid
he must not have underlaid
we must not have underlaid
you must not have underlaid
they must not have underlaid	I must not have been underlaying
you must not have been underlaying
he must not have been underlaying
we must not have been underlaying
you must not have been underlaying
they must not have been underlaying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I underlay?
must you underlay?
must he underlay?
must we underlay?
must you underlay?
must they underlay? 	must I be underlaying?
must you be underlaying?
must he be underlaying?
must we be underlaying?
must you be underlaying?
must they be underlaying? 	must I have underlaid?
must you have underlaid?
must he have underlaid?
must we have underlaid?
must you have underlaid?
must they have underlaid? 	must I have been underlaying?
must you have been underlaying?
must he have been underlaying?
must we have been underlaying?
must you have been underlaying?
must they have been underlaying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not underlay?
must you not underlay?
must he not underlay?
must we not underlay?
must you not underlay?
must they not underlay? 	must I not be underlaying?
must you not be underlaying?
must he not be underlaying?
must we not be underlaying?
must you not be underlaying?
must they not be underlaying? 	must I not have underlaid?
must you not have underlaid?
must he not have underlaid?
must we not have underlaid?
must you not have underlaid?
must they not have underlaid? 	must I not have been underlaying?
must you not have been underlaying?
must he not have been underlaying?
must we not have been underlaying?
must you not have been underlaying?
must they not have been underlaying?