must valve
Verbo regular: valve - valved- valved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must valve
you must valve
he must valve
we must valve
you must valve
they must valve 	I must be valving
you must be valving
he must be valving
we must be valving
you must be valving
they must be valving	I must have valved
you must have valved
he must have valved
we must have valved
you must have valved
they must have valved	I must have been valving
you must have been valving
he must have been valving
we must have been valving
you must have been valving
they must have been valving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not valve
you must not valve
he must not valve
we must not valve
you must not valve
they must not valve 	I must not be valving
you must not be valving
he must not be valving
we must not be valving
you must not be valving
they must not be valving	I must not have valved
you must not have valved
he must not have valved
we must not have valved
you must not have valved
they must not have valved	I must not have been valving
you must not have been valving
he must not have been valving
we must not have been valving
you must not have been valving
they must not have been valving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I valve?
must you valve?
must he valve?
must we valve?
must you valve?
must they valve? 	must I be valving?
must you be valving?
must he be valving?
must we be valving?
must you be valving?
must they be valving? 	must I have valved?
must you have valved?
must he have valved?
must we have valved?
must you have valved?
must they have valved? 	must I have been valving?
must you have been valving?
must he have been valving?
must we have been valving?
must you have been valving?
must they have been valving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not valve?
must you not valve?
must he not valve?
must we not valve?
must you not valve?
must they not valve? 	must I not be valving?
must you not be valving?
must he not be valving?
must we not be valving?
must you not be valving?
must they not be valving? 	must I not have valved?
must you not have valved?
must he not have valved?
must we not have valved?
must you not have valved?
must they not have valved? 	must I not have been valving?
must you not have been valving?
must he not have been valving?
must we not have been valving?
must you not have been valving?
must they not have been valving?