could blacktop
Regular verb: blacktop - blacktoped- blacktoped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could blacktop
you could blacktop
he could blacktop
we could blacktop
you could blacktop
they could blacktop 	I could be blacktoping
you could be blacktoping
he could be blacktoping
we could be blacktoping
you could be blacktoping
they could be blacktoping	I could have blacktoped
you could have blacktoped
he could have blacktoped
we could have blacktoped
you could have blacktoped
they could have blacktoped	I could have been blacktoping
you could have been blacktoping
he could have been blacktoping
we could have been blacktoping
you could have been blacktoping
they could have been blacktoping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not blacktop
you could not blacktop
he could not blacktop
we could not blacktop
you could not blacktop
they could not blacktop 	I could not be blacktoping
you could not be blacktoping
he could not be blacktoping
we could not be blacktoping
you could not be blacktoping
they could not be blacktoping	I could not have blacktoped
you could not have blacktoped
he could not have blacktoped
we could not have blacktoped
you could not have blacktoped
they could not have blacktoped	I could not have been blacktoping
you could not have been blacktoping
he could not have been blacktoping
we could not have been blacktoping
you could not have been blacktoping
they could not have been blacktoping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I blacktop?
could you blacktop?
could he blacktop?
could we blacktop?
could you blacktop?
could they blacktop? 	could I be blacktoping?
could you be blacktoping?
could he be blacktoping?
could we be blacktoping?
could you be blacktoping?
could they be blacktoping? 	could I have blacktoped?
could you have blacktoped?
could he have blacktoped?
could we have blacktoped?
could you have blacktoped?
could they have blacktoped? 	could I have been blacktoping?
could you have been blacktoping?
could he have been blacktoping?
could we have been blacktoping?
could you have been blacktoping?
could they have been blacktoping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not blacktop?
could you not blacktop?
could he not blacktop?
could we not blacktop?
could you not blacktop?
could they not blacktop? 	could I not be blacktoping?
could you not be blacktoping?
could he not be blacktoping?
could we not be blacktoping?
could you not be blacktoping?
could they not be blacktoping? 	could I not have blacktoped?
could you not have blacktoped?
could he not have blacktoped?
could we not have blacktoped?
could you not have blacktoped?
could they not have blacktoped? 	could I not have been blacktoping?
could you not have been blacktoping?
could he not have been blacktoping?
could we not have been blacktoping?
could you not have been blacktoping?
could they not have been blacktoping?