can sledgehammer
Regular verb: sledgehammer - sledgehammered- sledgehammered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can sledgehammer
you can sledgehammer
he can sledgehammer
we can sledgehammer
you can sledgehammer
they can sledgehammer 	I can be sledgehammering
you can be sledgehammering
he can be sledgehammering
we can be sledgehammering
you can be sledgehammering
they can be sledgehammering	I can have sledgehammered
you can have sledgehammered
he can have sledgehammered
we can have sledgehammered
you can have sledgehammered
they can have sledgehammered	I can have been sledgehammering
you can have been sledgehammering
he can have been sledgehammering
we can have been sledgehammering
you can have been sledgehammering
they can have been sledgehammering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't sledgehammer
you can't sledgehammer
he can't sledgehammer
we can't sledgehammer
you can't sledgehammer
they can't sledgehammer 	I can't be sledgehammering
you can't be sledgehammering
he can't be sledgehammering
we can't be sledgehammering
you can't be sledgehammering
they can't be sledgehammering	I can't have sledgehammered
you can't have sledgehammered
he can't have sledgehammered
we can't have sledgehammered
you can't have sledgehammered
they can't have sledgehammered	I can't have been sledgehammering
you can't have been sledgehammering
he can't have been sledgehammering
we can't have been sledgehammering
you can't have been sledgehammering
they can't have been sledgehammering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I sledgehammer?
can you sledgehammer?
can he sledgehammer?
can we sledgehammer?
can you sledgehammer?
can they sledgehammer? 	can I be sledgehammering?
can you be sledgehammering?
can he be sledgehammering?
can we be sledgehammering?
can you be sledgehammering?
can they be sledgehammering? 	can I have sledgehammered?
can you have sledgehammered?
can he have sledgehammered?
can we have sledgehammered?
can you have sledgehammered?
can they have sledgehammered? 	can I have been sledgehammering?
can you have been sledgehammering?
can he have been sledgehammering?
can we have been sledgehammering?
can you have been sledgehammering?
can they have been sledgehammering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I sledgehammer?
can't you sledgehammer?
can't he sledgehammer?
can't we sledgehammer?
can't you sledgehammer?
can't they sledgehammer? 	can't I be sledgehammering?
can't you be sledgehammering?
can't he be sledgehammering?
can't we be sledgehammering?
can't you be sledgehammering?
can't they be sledgehammering? 	can't I have sledgehammered?
can't you have sledgehammered?
can't he have sledgehammered?
can't we have sledgehammered?
can't you have sledgehammered?
can't they have sledgehammered? 	can't I have been sledgehammering?
can't you have been sledgehammering?
can't he have been sledgehammering?
can't we have been sledgehammering?
can't you have been sledgehammering?
can't they have been sledgehammering?