must freeze
Irregular verb: freeze - froze- frozen

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must freeze
you must freeze
she must freeze
we must freeze
you must freeze
they must freeze 	I must be freezing
you must be freezing
she must be freezing
we must be freezing
you must be freezing
they must be freezing	I must have frozen
you must have frozen
she must have frozen
we must have frozen
you must have frozen
they must have frozen	I must have been freezing
you must have been freezing
she must have been freezing
we must have been freezing
you must have been freezing
they must have been freezing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't freeze
you mustn't freeze
she mustn't freeze
we mustn't freeze
you mustn't freeze
they mustn't freeze 	I mustn't be freezing
you mustn't be freezing
she mustn't be freezing
we mustn't be freezing
you mustn't be freezing
they mustn't be freezing	I mustn't have frozen
you mustn't have frozen
she mustn't have frozen
we mustn't have frozen
you mustn't have frozen
they mustn't have frozen	I mustn't have been freezing
you mustn't have been freezing
she mustn't have been freezing
we mustn't have been freezing
you mustn't have been freezing
they mustn't have been freezing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I freeze?
must you freeze?
must she freeze?
must we freeze?
must you freeze?
must they freeze? 	must I be freezing?
must you be freezing?
must she be freezing?
must we be freezing?
must you be freezing?
must they be freezing? 	must I have frozen?
must you have frozen?
must she have frozen?
must we have frozen?
must you have frozen?
must they have frozen? 	must I have been freezing?
must you have been freezing?
must she have been freezing?
must we have been freezing?
must you have been freezing?
must they have been freezing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I freeze?
mustn't you freeze?
mustn't she freeze?
mustn't we freeze?
mustn't you freeze?
mustn't they freeze? 	mustn't I be freezing?
mustn't you be freezing?
mustn't she be freezing?
mustn't we be freezing?
mustn't you be freezing?
mustn't they be freezing? 	mustn't I have frozen?
mustn't you have frozen?
mustn't she have frozen?
mustn't we have frozen?
mustn't you have frozen?
mustn't they have frozen? 	mustn't I have been freezing?
mustn't you have been freezing?
mustn't she have been freezing?
mustn't we have been freezing?
mustn't you have been freezing?
mustn't they have been freezing?