English verb conjugation
MUST FREE

Regular verb: free - freed - freed

Affirmation

Simple form	V-ing form
I must free you must free he must free we must free you must free they must free	I must be freeing you must be freeing he must be freeing we must be freeing you must be freeing they must be freeing
Perfect	V-ing perfect
I must have freed you must have freed he must have freed we must have freed you must have freed they must have freed	I must have been freeing you must have been freeing he must have been freeing we must have been freeing you must have been freeing they must have been freeing

Negation

Simple form	V-ing form
I mustn't free you mustn't free he mustn't free we mustn't free you mustn't free they mustn't free	I mustn't be freeing you mustn't be freeing he mustn't be freeing we mustn't be freeing you mustn't be freeing they mustn't be freeing
Perfect	V-ing perfect
I mustn't have freed you mustn't have freed he mustn't have freed we mustn't have freed you mustn't have freed they mustn't have freed	I mustn't have been freeing you mustn't have been freeing he mustn't have been freeing we mustn't have been freeing you mustn't have been freeing they mustn't have been freeing

Interrogative form

Simple form	V-ing form
must I free? must you free? must he free? must we free? must you free? must they free?	must I be freeing? must you be freeing? must he be freeing? must we be freeing? must you be freeing? must they be freeing?
Perfect	V-ing perfect
must I have freed? must you have freed? must he have freed? must we have freed? must you have freed? must they have freed?	must I have been freeing? must you have been freeing? must he have been freeing? must we have been freeing? must you have been freeing? must they have been freeing?

Interro-negative form

Simple form	V-ing form
mustn't I free? mustn't you free? mustn't he free? mustn't we free? mustn't you free? mustn't they free?	mustn't I be freeing? mustn't you be freeing? mustn't he be freeing? mustn't we be freeing? mustn't you be freeing? mustn't they be freeing?
Perfect	V-ing perfect
mustn't I have freed? mustn't you have freed? mustn't he have freed? mustn't we have freed? mustn't you have freed? mustn't they have freed?	mustn't I have been freeing? mustn't you have been freeing? mustn't he have been freeing? mustn't we have been freeing? mustn't you have been freeing? mustn't they have been freeing?