can sandpaper
Regular verb: sandpaper - sandpapered- sandpapered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can sandpaper
you can sandpaper
he can sandpaper
we can sandpaper
you can sandpaper
they can sandpaper 	I can be sandpapering
you can be sandpapering
he can be sandpapering
we can be sandpapering
you can be sandpapering
they can be sandpapering	I can have sandpapered
you can have sandpapered
he can have sandpapered
we can have sandpapered
you can have sandpapered
they can have sandpapered	I can have been sandpapering
you can have been sandpapering
he can have been sandpapering
we can have been sandpapering
you can have been sandpapering
they can have been sandpapering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't sandpaper
you can't sandpaper
he can't sandpaper
we can't sandpaper
you can't sandpaper
they can't sandpaper 	I can't be sandpapering
you can't be sandpapering
he can't be sandpapering
we can't be sandpapering
you can't be sandpapering
they can't be sandpapering	I can't have sandpapered
you can't have sandpapered
he can't have sandpapered
we can't have sandpapered
you can't have sandpapered
they can't have sandpapered	I can't have been sandpapering
you can't have been sandpapering
he can't have been sandpapering
we can't have been sandpapering
you can't have been sandpapering
they can't have been sandpapering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I sandpaper?
can you sandpaper?
can he sandpaper?
can we sandpaper?
can you sandpaper?
can they sandpaper? 	can I be sandpapering?
can you be sandpapering?
can he be sandpapering?
can we be sandpapering?
can you be sandpapering?
can they be sandpapering? 	can I have sandpapered?
can you have sandpapered?
can he have sandpapered?
can we have sandpapered?
can you have sandpapered?
can they have sandpapered? 	can I have been sandpapering?
can you have been sandpapering?
can he have been sandpapering?
can we have been sandpapering?
can you have been sandpapering?
can they have been sandpapering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I sandpaper?
can't you sandpaper?
can't he sandpaper?
can't we sandpaper?
can't you sandpaper?
can't they sandpaper? 	can't I be sandpapering?
can't you be sandpapering?
can't he be sandpapering?
can't we be sandpapering?
can't you be sandpapering?
can't they be sandpapering? 	can't I have sandpapered?
can't you have sandpapered?
can't he have sandpapered?
can't we have sandpapered?
can't you have sandpapered?
can't they have sandpapered? 	can't I have been sandpapering?
can't you have been sandpapering?
can't he have been sandpapering?
can't we have been sandpapering?
can't you have been sandpapering?
can't they have been sandpapering?