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 must not collectivise
you must not collectivise
he must not collectivise
we must not collectivise
you must not collectivise
they must not collectivise 	I must not be collectivising
you must not be collectivising
he must not be collectivising
we must not be collectivising
you must not be collectivising
they must not be collectivising	I must not have collectivised
you must not have collectivised
he must not have collectivised
we must not have collectivised
you must not have collectivised
they must not have collectivised	I must not have been collectivising
you must not have been collectivising
he must not have been collectivising
we must not have been collectivising
you must not have been collectivising
they must not 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 	
must I not collectivise?
must you not collectivise?
must he not collectivise?
must we not collectivise?
must you not collectivise?
must they not collectivise? 	must I not be collectivising?
must you not be collectivising?
must he not be collectivising?
must we not be collectivising?
must you not be collectivising?
must they not be collectivising? 	must I not have collectivised?
must you not have collectivised?
must he not have collectivised?
must we not have collectivised?
must you not have collectivised?
must they not have collectivised? 	must I not have been collectivising?
must you not have been collectivising?
must he not have been collectivising?
must we not have been collectivising?
must you not have been collectivising?
must they not have been collectivising?