can snuff
Regular verb: snuff - snuffed- snuffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can snuff
you can snuff
he can snuff
we can snuff
you can snuff
they can snuff 	I can be snuffing
you can be snuffing
he can be snuffing
we can be snuffing
you can be snuffing
they can be snuffing	I can have snuffed
you can have snuffed
he can have snuffed
we can have snuffed
you can have snuffed
they can have snuffed	I can have been snuffing
you can have been snuffing
he can have been snuffing
we can have been snuffing
you can have been snuffing
they can have been snuffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't snuff
you can't snuff
he can't snuff
we can't snuff
you can't snuff
they can't snuff 	I can't be snuffing
you can't be snuffing
he can't be snuffing
we can't be snuffing
you can't be snuffing
they can't be snuffing	I can't have snuffed
you can't have snuffed
he can't have snuffed
we can't have snuffed
you can't have snuffed
they can't have snuffed	I can't have been snuffing
you can't have been snuffing
he can't have been snuffing
we can't have been snuffing
you can't have been snuffing
they can't have been snuffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I snuff?
can you snuff?
can he snuff?
can we snuff?
can you snuff?
can they snuff? 	can I be snuffing?
can you be snuffing?
can he be snuffing?
can we be snuffing?
can you be snuffing?
can they be snuffing? 	can I have snuffed?
can you have snuffed?
can he have snuffed?
can we have snuffed?
can you have snuffed?
can they have snuffed? 	can I have been snuffing?
can you have been snuffing?
can he have been snuffing?
can we have been snuffing?
can you have been snuffing?
can they have been snuffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I snuff?
can't you snuff?
can't he snuff?
can't we snuff?
can't you snuff?
can't they snuff? 	can't I be snuffing?
can't you be snuffing?
can't he be snuffing?
can't we be snuffing?
can't you be snuffing?
can't they be snuffing? 	can't I have snuffed?
can't you have snuffed?
can't he have snuffed?
can't we have snuffed?
can't you have snuffed?
can't they have snuffed? 	can't I have been snuffing?
can't you have been snuffing?
can't he have been snuffing?
can't we have been snuffing?
can't you have been snuffing?
can't they have been snuffing?