must collectivise
Regular verb: collectivise - collectivised- collectivised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must collectivise
you must collectivise
he must collectivise
we must collectivise
you must collectivise
they must collectivise 	I must be collectivising
you must be collectivising
he must be collectivising
we must be collectivising
you must be collectivising
they must be collectivising	I must have collectivised
you must have collectivised
he must have collectivised
we must have collectivised
you must have collectivised
they must have collectivised	I must have been collectivising
you must have been collectivising
he must have been collectivising
we must have been collectivising
you must have been collectivising
they must have been collectivising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't collectivise
you mustn't collectivise
he mustn't collectivise
we mustn't collectivise
you mustn't collectivise
they mustn't collectivise 	I mustn't be collectivising
you mustn't be collectivising
he mustn't be collectivising
we mustn't be collectivising
you mustn't be collectivising
they mustn't be collectivising	I mustn't have collectivised
you mustn't have collectivised
he mustn't have collectivised
we mustn't have collectivised
you mustn't have collectivised
they mustn't have collectivised	I mustn't have been collectivising
you mustn't have been collectivising
he mustn't have been collectivising
we mustn't have been collectivising
you mustn't have been collectivising
they mustn't have been collectivising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I collectivise?
must you collectivise?
must he collectivise?
must we collectivise?
must you collectivise?
must they collectivise? 	must I be collectivising?
must you be collectivising?
must he be collectivising?
must we be collectivising?
must you be collectivising?
must they be collectivising? 	must I have collectivised?
must you have collectivised?
must he have collectivised?
must we have collectivised?
must you have collectivised?
must they have collectivised? 	must I have been collectivising?
must you have been collectivising?
must he have been collectivising?
must we have been collectivising?
must you have been collectivising?
must they have been collectivising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I collectivise?
mustn't you collectivise?
mustn't he collectivise?
mustn't we collectivise?
mustn't you collectivise?
mustn't they collectivise? 	mustn't I be collectivising?
mustn't you be collectivising?
mustn't he be collectivising?
mustn't we be collectivising?
mustn't you be collectivising?
mustn't they be collectivising? 	mustn't I have collectivised?
mustn't you have collectivised?
mustn't he have collectivised?
mustn't we have collectivised?
mustn't you have collectivised?
mustn't they have collectivised? 	mustn't I have been collectivising?
mustn't you have been collectivising?
mustn't he have been collectivising?
mustn't we have been collectivising?
mustn't you have been collectivising?
mustn't they have been collectivising?