must unionize
Regular verb: unionize - unionized- unionized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unionize
you must unionize
she must unionize
we must unionize
you must unionize
they must unionize 	I must be unionizing
you must be unionizing
she must be unionizing
we must be unionizing
you must be unionizing
they must be unionizing	I must have unionized
you must have unionized
she must have unionized
we must have unionized
you must have unionized
they must have unionized	I must have been unionizing
you must have been unionizing
she must have been unionizing
we must have been unionizing
you must have been unionizing
they must have been unionizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't unionize
you mustn't unionize
she mustn't unionize
we mustn't unionize
you mustn't unionize
they mustn't unionize 	I mustn't be unionizing
you mustn't be unionizing
she mustn't be unionizing
we mustn't be unionizing
you mustn't be unionizing
they mustn't be unionizing	I mustn't have unionized
you mustn't have unionized
she mustn't have unionized
we mustn't have unionized
you mustn't have unionized
they mustn't have unionized	I mustn't have been unionizing
you mustn't have been unionizing
she mustn't have been unionizing
we mustn't have been unionizing
you mustn't have been unionizing
they mustn't have been unionizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unionize?
must you unionize?
must she unionize?
must we unionize?
must you unionize?
must they unionize? 	must I be unionizing?
must you be unionizing?
must she be unionizing?
must we be unionizing?
must you be unionizing?
must they be unionizing? 	must I have unionized?
must you have unionized?
must she have unionized?
must we have unionized?
must you have unionized?
must they have unionized? 	must I have been unionizing?
must you have been unionizing?
must she have been unionizing?
must we have been unionizing?
must you have been unionizing?
must they have been unionizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I unionize?
mustn't you unionize?
mustn't she unionize?
mustn't we unionize?
mustn't you unionize?
mustn't they unionize? 	mustn't I be unionizing?
mustn't you be unionizing?
mustn't she be unionizing?
mustn't we be unionizing?
mustn't you be unionizing?
mustn't they be unionizing? 	mustn't I have unionized?
mustn't you have unionized?
mustn't she have unionized?
mustn't we have unionized?
mustn't you have unionized?
mustn't they have unionized? 	mustn't I have been unionizing?
mustn't you have been unionizing?
mustn't she have been unionizing?
mustn't we have been unionizing?
mustn't you have been unionizing?
mustn't they have been unionizing?