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