could collectivize
Regular verb: collectivize - collectivized- collectivized

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't collectivize
you couldn't collectivize
he couldn't collectivize
we couldn't collectivize
you couldn't collectivize
they couldn't collectivize 	I couldn't be collectivizing
you couldn't be collectivizing
he couldn't be collectivizing
we couldn't be collectivizing
you couldn't be collectivizing
they couldn't be collectivizing	I couldn't have collectivized
you couldn't have collectivized
he couldn't have collectivized
we couldn't have collectivized
you couldn't have collectivized
they couldn't have collectivized	I couldn't have been collectivizing
you couldn't have been collectivizing
he couldn't have been collectivizing
we couldn't have been collectivizing
you couldn't have been collectivizing
they couldn't have been collectivizing	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I collectivize?
couldn't you collectivize?
couldn't he collectivize?
couldn't we collectivize?
couldn't you collectivize?
couldn't they collectivize? 	couldn't I be collectivizing?
couldn't you be collectivizing?
couldn't he be collectivizing?
couldn't we be collectivizing?
couldn't you be collectivizing?
couldn't they be collectivizing? 	couldn't I have collectivized?
couldn't you have collectivized?
couldn't he have collectivized?
couldn't we have collectivized?
couldn't you have collectivized?
couldn't they have collectivized? 	couldn't I have been collectivizing?
couldn't you have been collectivizing?
couldn't he have been collectivizing?
couldn't we have been collectivizing?
couldn't you have been collectivizing?
couldn't they have been collectivizing?