could jump-rope
Regular verb: jump-rope - jump-roped- jump-roped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could jump-rope
you could jump-rope
she could jump-rope
we could jump-rope
you could jump-rope
they could jump-rope 	I could be jump-roping
you could be jump-roping
she could be jump-roping
we could be jump-roping
you could be jump-roping
they could be jump-roping	I could have jump-roped
you could have jump-roped
she could have jump-roped
we could have jump-roped
you could have jump-roped
they could have jump-roped	I could have been jump-roping
you could have been jump-roping
she could have been jump-roping
we could have been jump-roping
you could have been jump-roping
they could have been jump-roping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not jump-rope
you could not jump-rope
she could not jump-rope
we could not jump-rope
you could not jump-rope
they could not jump-rope 	I could not be jump-roping
you could not be jump-roping
she could not be jump-roping
we could not be jump-roping
you could not be jump-roping
they could not be jump-roping	I could not have jump-roped
you could not have jump-roped
she could not have jump-roped
we could not have jump-roped
you could not have jump-roped
they could not have jump-roped	I could not have been jump-roping
you could not have been jump-roping
she could not have been jump-roping
we could not have been jump-roping
you could not have been jump-roping
they could not have been jump-roping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I jump-rope?
could you jump-rope?
could she jump-rope?
could we jump-rope?
could you jump-rope?
could they jump-rope? 	could I be jump-roping?
could you be jump-roping?
could she be jump-roping?
could we be jump-roping?
could you be jump-roping?
could they be jump-roping? 	could I have jump-roped?
could you have jump-roped?
could she have jump-roped?
could we have jump-roped?
could you have jump-roped?
could they have jump-roped? 	could I have been jump-roping?
could you have been jump-roping?
could she have been jump-roping?
could we have been jump-roping?
could you have been jump-roping?
could they have been jump-roping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not jump-rope?
could you not jump-rope?
could she not jump-rope?
could we not jump-rope?
could you not jump-rope?
could they not jump-rope? 	could I not be jump-roping?
could you not be jump-roping?
could she not be jump-roping?
could we not be jump-roping?
could you not be jump-roping?
could they not be jump-roping? 	could I not have jump-roped?
could you not have jump-roped?
could she not have jump-roped?
could we not have jump-roped?
could you not have jump-roped?
could they not have jump-roped? 	could I not have been jump-roping?
could you not have been jump-roping?
could she not have been jump-roping?
could we not have been jump-roping?
could you not have been jump-roping?
could they not have been jump-roping?