can sharp
Regular verb: sharp - sharped- sharped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can sharp
you can sharp
he can sharp
we can sharp
you can sharp
they can sharp 	I can be sharping
you can be sharping
he can be sharping
we can be sharping
you can be sharping
they can be sharping	I can have sharped
you can have sharped
he can have sharped
we can have sharped
you can have sharped
they can have sharped	I can have been sharping
you can have been sharping
he can have been sharping
we can have been sharping
you can have been sharping
they can have been sharping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't sharp
you can't sharp
he can't sharp
we can't sharp
you can't sharp
they can't sharp 	I can't be sharping
you can't be sharping
he can't be sharping
we can't be sharping
you can't be sharping
they can't be sharping	I can't have sharped
you can't have sharped
he can't have sharped
we can't have sharped
you can't have sharped
they can't have sharped	I can't have been sharping
you can't have been sharping
he can't have been sharping
we can't have been sharping
you can't have been sharping
they can't have been sharping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I sharp?
can you sharp?
can he sharp?
can we sharp?
can you sharp?
can they sharp? 	can I be sharping?
can you be sharping?
can he be sharping?
can we be sharping?
can you be sharping?
can they be sharping? 	can I have sharped?
can you have sharped?
can he have sharped?
can we have sharped?
can you have sharped?
can they have sharped? 	can I have been sharping?
can you have been sharping?
can he have been sharping?
can we have been sharping?
can you have been sharping?
can they have been sharping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I sharp?
can't you sharp?
can't he sharp?
can't we sharp?
can't you sharp?
can't they sharp? 	can't I be sharping?
can't you be sharping?
can't he be sharping?
can't we be sharping?
can't you be sharping?
can't they be sharping? 	can't I have sharped?
can't you have sharped?
can't he have sharped?
can't we have sharped?
can't you have sharped?
can't they have sharped? 	can't I have been sharping?
can't you have been sharping?
can't he have been sharping?
can't we have been sharping?
can't you have been sharping?
can't they have been sharping?