must assail
Verbo regular: assail - assailed- assailed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must assail
you must assail
he must assail
we must assail
you must assail
they must assail 	I must be assailing
you must be assailing
he must be assailing
we must be assailing
you must be assailing
they must be assailing	I must have assailed
you must have assailed
he must have assailed
we must have assailed
you must have assailed
they must have assailed	I must have been assailing
you must have been assailing
he must have been assailing
we must have been assailing
you must have been assailing
they must have been assailing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not assail
you must not assail
he must not assail
we must not assail
you must not assail
they must not assail 	I must not be assailing
you must not be assailing
he must not be assailing
we must not be assailing
you must not be assailing
they must not be assailing	I must not have assailed
you must not have assailed
he must not have assailed
we must not have assailed
you must not have assailed
they must not have assailed	I must not have been assailing
you must not have been assailing
he must not have been assailing
we must not have been assailing
you must not have been assailing
they must not have been assailing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I assail?
must you assail?
must he assail?
must we assail?
must you assail?
must they assail? 	must I be assailing?
must you be assailing?
must he be assailing?
must we be assailing?
must you be assailing?
must they be assailing? 	must I have assailed?
must you have assailed?
must he have assailed?
must we have assailed?
must you have assailed?
must they have assailed? 	must I have been assailing?
must you have been assailing?
must he have been assailing?
must we have been assailing?
must you have been assailing?
must they have been assailing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not assail?
must you not assail?
must he not assail?
must we not assail?
must you not assail?
must they not assail? 	must I not be assailing?
must you not be assailing?
must he not be assailing?
must we not be assailing?
must you not be assailing?
must they not be assailing? 	must I not have assailed?
must you not have assailed?
must he not have assailed?
must we not have assailed?
must you not have assailed?
must they not have assailed? 	must I not have been assailing?
must you not have been assailing?
must he not have been assailing?
must we not have been assailing?
must you not have been assailing?
must they not have been assailing?