could collectivise
Regular verb: collectivise - collectivised- collectivised

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not collectivise
you could not collectivise
he could not collectivise
we could not collectivise
you could not collectivise
they could not collectivise 	I could not be collectivising
you could not be collectivising
he could not be collectivising
we could not be collectivising
you could not be collectivising
they could not be collectivising	I could not have collectivised
you could not have collectivised
he could not have collectivised
we could not have collectivised
you could not have collectivised
they could not have collectivised	I could not have been collectivising
you could not have been collectivising
he could not have been collectivising
we could not have been collectivising
you could not have been collectivising
they could not have been collectivising	

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

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