English verb conjugation
CAN SLEDGEHAMMER

Regular verb: sledgehammer - sledgehammered - sledgehammered

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?