could dilate
Regular verb: dilate - dilated- dilated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dilate
you could dilate
she could dilate
we could dilate
you could dilate
they could dilate 	I could be dilating
you could be dilating
she could be dilating
we could be dilating
you could be dilating
they could be dilating	I could have dilated
you could have dilated
she could have dilated
we could have dilated
you could have dilated
they could have dilated	I could have been dilating
you could have been dilating
she could have been dilating
we could have been dilating
you could have been dilating
they could have been dilating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't dilate
you couldn't dilate
she couldn't dilate
we couldn't dilate
you couldn't dilate
they couldn't dilate 	I couldn't be dilating
you couldn't be dilating
she couldn't be dilating
we couldn't be dilating
you couldn't be dilating
they couldn't be dilating	I couldn't have dilated
you couldn't have dilated
she couldn't have dilated
we couldn't have dilated
you couldn't have dilated
they couldn't have dilated	I couldn't have been dilating
you couldn't have been dilating
she couldn't have been dilating
we couldn't have been dilating
you couldn't have been dilating
they couldn't have been dilating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dilate?
could you dilate?
could she dilate?
could we dilate?
could you dilate?
could they dilate? 	could I be dilating?
could you be dilating?
could she be dilating?
could we be dilating?
could you be dilating?
could they be dilating? 	could I have dilated?
could you have dilated?
could she have dilated?
could we have dilated?
could you have dilated?
could they have dilated? 	could I have been dilating?
could you have been dilating?
could she have been dilating?
could we have been dilating?
could you have been dilating?
could they have been dilating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I dilate?
couldn't you dilate?
couldn't she dilate?
couldn't we dilate?
couldn't you dilate?
couldn't they dilate? 	couldn't I be dilating?
couldn't you be dilating?
couldn't she be dilating?
couldn't we be dilating?
couldn't you be dilating?
couldn't they be dilating? 	couldn't I have dilated?
couldn't you have dilated?
couldn't she have dilated?
couldn't we have dilated?
couldn't you have dilated?
couldn't they have dilated? 	couldn't I have been dilating?
couldn't you have been dilating?
couldn't she have been dilating?
couldn't we have been dilating?
couldn't you have been dilating?
couldn't they have been dilating?