English verb conjugation
MUST ASSIGN

Regular verb: assign - assigned - assigned

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I mustn't assign you mustn't assign he 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 he mustn't be assigning we mustn't be assigning you mustn't be assigning they mustn't be assigning
Perfect	V-ing perfect
I mustn't have assigned you mustn't have assigned he 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 he mustn't have been assigning we mustn't have been assigning you mustn't have been assigning they mustn't have been assigning

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
mustn't I assign? mustn't you assign? mustn't he 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 he be assigning? mustn't we be assigning? mustn't you be assigning? mustn't they be assigning?
Perfect	V-ing perfect
mustn't I have assigned? mustn't you have assigned? mustn't he 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 he have been assigning? mustn't we have been assigning? mustn't you have been assigning? mustn't they have been assigning?