can smother
Regular verb: smother - smothered- smothered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can smother
you can smother
she can smother
we can smother
you can smother
they can smother 	I can be smothering
you can be smothering
she can be smothering
we can be smothering
you can be smothering
they can be smothering	I can have smothered
you can have smothered
she can have smothered
we can have smothered
you can have smothered
they can have smothered	I can have been smothering
you can have been smothering
she can have been smothering
we can have been smothering
you can have been smothering
they can have been smothering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't smother
you can't smother
she can't smother
we can't smother
you can't smother
they can't smother 	I can't be smothering
you can't be smothering
she can't be smothering
we can't be smothering
you can't be smothering
they can't be smothering	I can't have smothered
you can't have smothered
she can't have smothered
we can't have smothered
you can't have smothered
they can't have smothered	I can't have been smothering
you can't have been smothering
she can't have been smothering
we can't have been smothering
you can't have been smothering
they can't have been smothering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I smother?
can you smother?
can she smother?
can we smother?
can you smother?
can they smother? 	can I be smothering?
can you be smothering?
can she be smothering?
can we be smothering?
can you be smothering?
can they be smothering? 	can I have smothered?
can you have smothered?
can she have smothered?
can we have smothered?
can you have smothered?
can they have smothered? 	can I have been smothering?
can you have been smothering?
can she have been smothering?
can we have been smothering?
can you have been smothering?
can they have been smothering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I smother?
can't you smother?
can't she smother?
can't we smother?
can't you smother?
can't they smother? 	can't I be smothering?
can't you be smothering?
can't she be smothering?
can't we be smothering?
can't you be smothering?
can't they be smothering? 	can't I have smothered?
can't you have smothered?
can't she have smothered?
can't we have smothered?
can't you have smothered?
can't they have smothered? 	can't I have been smothering?
can't you have been smothering?
can't she have been smothering?
can't we have been smothering?
can't you have been smothering?
can't they have been smothering?