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 must not freeze
you must not freeze
she must not freeze
we must not freeze
you must not freeze
they must not freeze 	I must not be freezing
you must not be freezing
she must not be freezing
we must not be freezing
you must not be freezing
they must not be freezing	I must not have frozen
you must not have frozen
she must not have frozen
we must not have frozen
you must not have frozen
they must not have frozen	I must not have been freezing
you must not have been freezing
she must not have been freezing
we must not have been freezing
you must not have been freezing
they must not 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 	
must I not freeze?
must you not freeze?
must she not freeze?
must we not freeze?
must you not freeze?
must they not freeze? 	must I not be freezing?
must you not be freezing?
must she not be freezing?
must we not be freezing?
must you not be freezing?
must they not be freezing? 	must I not have frozen?
must you not have frozen?
must she not have frozen?
must we not have frozen?
must you not have frozen?
must they not have frozen? 	must I not have been freezing?
must you not have been freezing?
must she not have been freezing?
must we not have been freezing?
must you not have been freezing?
must they not have been freezing?