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
she must assign
we must assign
you must assign
they must assign 	I must be assigning
you must be assigning
she must be assigning
we must be assigning
you must be assigning
they must be assigning	I must have assigned
you must have assigned
she 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
she 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 mustn't assign
you mustn't assign
she mustn't assign
we mustn't assign
you mustn't assign
they mustn't assign 	I mustn't be assigning
you mustn't be assigning
she mustn't be assigning
we mustn't be assigning
you mustn't be assigning
they mustn't be assigning	I mustn't have assigned
you mustn't have assigned
she mustn't have assigned
we mustn't have assigned
you mustn't have assigned
they mustn't have assigned	I mustn't have been assigning
you mustn't have been assigning
she mustn't have been assigning
we mustn't have been assigning
you mustn't have been assigning
they mustn't have been assigning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I assign?
must you assign?
must she assign?
must we assign?
must you assign?
must they assign? 	must I be assigning?
must you be assigning?
must she be assigning?
must we be assigning?
must you be assigning?
must they be assigning? 	must I have assigned?
must you have assigned?
must she 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 she 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 	
mustn't I assign?
mustn't you assign?
mustn't she assign?
mustn't we assign?
mustn't you assign?
mustn't they assign? 	mustn't I be assigning?
mustn't you be assigning?
mustn't she be assigning?
mustn't we be assigning?
mustn't you be assigning?
mustn't they be assigning? 	mustn't I have assigned?
mustn't you have assigned?
mustn't she have assigned?
mustn't we have assigned?
mustn't you have assigned?
mustn't they have assigned? 	mustn't I have been assigning?
mustn't you have been assigning?
mustn't she have been assigning?
mustn't we have been assigning?
mustn't you have been assigning?
mustn't they have been assigning?