could kneecap
Regular verb: kneecap - kneecapped- kneecapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could kneecap
you could kneecap
he could kneecap
we could kneecap
you could kneecap
they could kneecap 	I could be kneecapping
you could be kneecapping
he could be kneecapping
we could be kneecapping
you could be kneecapping
they could be kneecapping	I could have kneecapped
you could have kneecapped
he could have kneecapped
we could have kneecapped
you could have kneecapped
they could have kneecapped	I could have been kneecapping
you could have been kneecapping
he could have been kneecapping
we could have been kneecapping
you could have been kneecapping
they could have been kneecapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't kneecap
you couldn't kneecap
he couldn't kneecap
we couldn't kneecap
you couldn't kneecap
they couldn't kneecap 	I couldn't be kneecapping
you couldn't be kneecapping
he couldn't be kneecapping
we couldn't be kneecapping
you couldn't be kneecapping
they couldn't be kneecapping	I couldn't have kneecapped
you couldn't have kneecapped
he couldn't have kneecapped
we couldn't have kneecapped
you couldn't have kneecapped
they couldn't have kneecapped	I couldn't have been kneecapping
you couldn't have been kneecapping
he couldn't have been kneecapping
we couldn't have been kneecapping
you couldn't have been kneecapping
they couldn't have been kneecapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I kneecap?
could you kneecap?
could he kneecap?
could we kneecap?
could you kneecap?
could they kneecap? 	could I be kneecapping?
could you be kneecapping?
could he be kneecapping?
could we be kneecapping?
could you be kneecapping?
could they be kneecapping? 	could I have kneecapped?
could you have kneecapped?
could he have kneecapped?
could we have kneecapped?
could you have kneecapped?
could they have kneecapped? 	could I have been kneecapping?
could you have been kneecapping?
could he have been kneecapping?
could we have been kneecapping?
could you have been kneecapping?
could they have been kneecapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I kneecap?
couldn't you kneecap?
couldn't he kneecap?
couldn't we kneecap?
couldn't you kneecap?
couldn't they kneecap? 	couldn't I be kneecapping?
couldn't you be kneecapping?
couldn't he be kneecapping?
couldn't we be kneecapping?
couldn't you be kneecapping?
couldn't they be kneecapping? 	couldn't I have kneecapped?
couldn't you have kneecapped?
couldn't he have kneecapped?
couldn't we have kneecapped?
couldn't you have kneecapped?
couldn't they have kneecapped? 	couldn't I have been kneecapping?
couldn't you have been kneecapping?
couldn't he have been kneecapping?
couldn't we have been kneecapping?
couldn't you have been kneecapping?
couldn't they have been kneecapping?