can staple
Regular verb: staple - stapled- stapled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can staple
you can staple
he can staple
we can staple
you can staple
they can staple 	I can be stapling
you can be stapling
he can be stapling
we can be stapling
you can be stapling
they can be stapling	I can have stapled
you can have stapled
he can have stapled
we can have stapled
you can have stapled
they can have stapled	I can have been stapling
you can have been stapling
he can have been stapling
we can have been stapling
you can have been stapling
they can have been stapling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't staple
you can't staple
he can't staple
we can't staple
you can't staple
they can't staple 	I can't be stapling
you can't be stapling
he can't be stapling
we can't be stapling
you can't be stapling
they can't be stapling	I can't have stapled
you can't have stapled
he can't have stapled
we can't have stapled
you can't have stapled
they can't have stapled	I can't have been stapling
you can't have been stapling
he can't have been stapling
we can't have been stapling
you can't have been stapling
they can't have been stapling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I staple?
can you staple?
can he staple?
can we staple?
can you staple?
can they staple? 	can I be stapling?
can you be stapling?
can he be stapling?
can we be stapling?
can you be stapling?
can they be stapling? 	can I have stapled?
can you have stapled?
can he have stapled?
can we have stapled?
can you have stapled?
can they have stapled? 	can I have been stapling?
can you have been stapling?
can he have been stapling?
can we have been stapling?
can you have been stapling?
can they have been stapling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I staple?
can't you staple?
can't he staple?
can't we staple?
can't you staple?
can't they staple? 	can't I be stapling?
can't you be stapling?
can't he be stapling?
can't we be stapling?
can't you be stapling?
can't they be stapling? 	can't I have stapled?
can't you have stapled?
can't he have stapled?
can't we have stapled?
can't you have stapled?
can't they have stapled? 	can't I have been stapling?
can't you have been stapling?
can't he have been stapling?
can't we have been stapling?
can't you have been stapling?
can't they have been stapling?