English verb conjugation
COULD SLEDGEHAMMER

Regular verb: sledgehammer - sledgehammered - sledgehammered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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