must assign
Verbo regular: assign - assigned- assigned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must assign
you must assign
he must assign
we must assign
you must assign
they must assign 	I must be assigning
you must be assigning
he must be assigning
we must be assigning
you must be assigning
they must be assigning	I must have assigned
you must have assigned
he must have assigned
we must have assigned
you must have assigned
they must have assigned	I must have been assigning
you must have been assigning
he must have been assigning
we must have been assigning
you must have been assigning
they must have been assigning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not assign
you must not assign
he must not assign
we must not assign
you must not assign
they must not assign 	I must not be assigning
you must not be assigning
he must not be assigning
we must not be assigning
you must not be assigning
they must not be assigning	I must not have assigned
you must not have assigned
he must not have assigned
we must not have assigned
you must not have assigned
they must not have assigned	I must not have been assigning
you must not have been assigning
he must not have been assigning
we must not have been assigning
you must not have been assigning
they must not have been assigning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I assign?
must you assign?
must he assign?
must we assign?
must you assign?
must they assign? 	must I be assigning?
must you be assigning?
must he be assigning?
must we be assigning?
must you be assigning?
must they be assigning? 	must I have assigned?
must you have assigned?
must he have assigned?
must we have assigned?
must you have assigned?
must they have assigned? 	must I have been assigning?
must you have been assigning?
must he have been assigning?
must we have been assigning?
must you have been assigning?
must they have been assigning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not assign?
must you not assign?
must he not assign?
must we not assign?
must you not assign?
must they not assign? 	must I not be assigning?
must you not be assigning?
must he not be assigning?
must we not be assigning?
must you not be assigning?
must they not be assigning? 	must I not have assigned?
must you not have assigned?
must he not have assigned?
must we not have assigned?
must you not have assigned?
must they not have assigned? 	must I not have been assigning?
must you not have been assigning?
must he not have been assigning?
must we not have been assigning?
must you not have been assigning?
must they not have been assigning?