must free
Regular verb: free - freed- freed

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