could extravasate
Regular verb: extravasate - extravasated- extravasated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could extravasate
you could extravasate
he could extravasate
we could extravasate
you could extravasate
they could extravasate 	I could be extravasating
you could be extravasating
he could be extravasating
we could be extravasating
you could be extravasating
they could be extravasating	I could have extravasated
you could have extravasated
he could have extravasated
we could have extravasated
you could have extravasated
they could have extravasated	I could have been extravasating
you could have been extravasating
he could have been extravasating
we could have been extravasating
you could have been extravasating
they could have been extravasating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't extravasate
you couldn't extravasate
he couldn't extravasate
we couldn't extravasate
you couldn't extravasate
they couldn't extravasate 	I couldn't be extravasating
you couldn't be extravasating
he couldn't be extravasating
we couldn't be extravasating
you couldn't be extravasating
they couldn't be extravasating	I couldn't have extravasated
you couldn't have extravasated
he couldn't have extravasated
we couldn't have extravasated
you couldn't have extravasated
they couldn't have extravasated	I couldn't have been extravasating
you couldn't have been extravasating
he couldn't have been extravasating
we couldn't have been extravasating
you couldn't have been extravasating
they couldn't have been extravasating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I extravasate?
could you extravasate?
could he extravasate?
could we extravasate?
could you extravasate?
could they extravasate? 	could I be extravasating?
could you be extravasating?
could he be extravasating?
could we be extravasating?
could you be extravasating?
could they be extravasating? 	could I have extravasated?
could you have extravasated?
could he have extravasated?
could we have extravasated?
could you have extravasated?
could they have extravasated? 	could I have been extravasating?
could you have been extravasating?
could he have been extravasating?
could we have been extravasating?
could you have been extravasating?
could they have been extravasating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I extravasate?
couldn't you extravasate?
couldn't he extravasate?
couldn't we extravasate?
couldn't you extravasate?
couldn't they extravasate? 	couldn't I be extravasating?
couldn't you be extravasating?
couldn't he be extravasating?
couldn't we be extravasating?
couldn't you be extravasating?
couldn't they be extravasating? 	couldn't I have extravasated?
couldn't you have extravasated?
couldn't he have extravasated?
couldn't we have extravasated?
couldn't you have extravasated?
couldn't they have extravasated? 	couldn't I have been extravasating?
couldn't you have been extravasating?
couldn't he have been extravasating?
couldn't we have been extravasating?
couldn't you have been extravasating?
couldn't they have been extravasating?