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