must collectivize
Regular verb: collectivize - collectivized- collectivized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must collectivize
you must collectivize
she must collectivize
we must collectivize
you must collectivize
they must collectivize 	I must be collectivizing
you must be collectivizing
she must be collectivizing
we must be collectivizing
you must be collectivizing
they must be collectivizing	I must have collectivized
you must have collectivized
she must have collectivized
we must have collectivized
you must have collectivized
they must have collectivized	I must have been collectivizing
you must have been collectivizing
she must have been collectivizing
we must have been collectivizing
you must have been collectivizing
they must have been collectivizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not collectivize
you must not collectivize
she must not collectivize
we must not collectivize
you must not collectivize
they must not collectivize 	I must not be collectivizing
you must not be collectivizing
she must not be collectivizing
we must not be collectivizing
you must not be collectivizing
they must not be collectivizing	I must not have collectivized
you must not have collectivized
she must not have collectivized
we must not have collectivized
you must not have collectivized
they must not have collectivized	I must not have been collectivizing
you must not have been collectivizing
she must not have been collectivizing
we must not have been collectivizing
you must not have been collectivizing
they must not have been collectivizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I collectivize?
must you collectivize?
must she collectivize?
must we collectivize?
must you collectivize?
must they collectivize? 	must I be collectivizing?
must you be collectivizing?
must she be collectivizing?
must we be collectivizing?
must you be collectivizing?
must they be collectivizing? 	must I have collectivized?
must you have collectivized?
must she have collectivized?
must we have collectivized?
must you have collectivized?
must they have collectivized? 	must I have been collectivizing?
must you have been collectivizing?
must she have been collectivizing?
must we have been collectivizing?
must you have been collectivizing?
must they have been collectivizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not collectivize?
must you not collectivize?
must she not collectivize?
must we not collectivize?
must you not collectivize?
must they not collectivize? 	must I not be collectivizing?
must you not be collectivizing?
must she not be collectivizing?
must we not be collectivizing?
must you not be collectivizing?
must they not be collectivizing? 	must I not have collectivized?
must you not have collectivized?
must she not have collectivized?
must we not have collectivized?
must you not have collectivized?
must they not have collectivized? 	must I not have been collectivizing?
must you not have been collectivizing?
must she not have been collectivizing?
must we not have been collectivizing?
must you not have been collectivizing?
must they not have been collectivizing?