English verb conjugation
COULD SHEER

Regular verb: sheer - sheered - sheered

Affirmation

Simple form	V-ing form
I could sheer you could sheer he could sheer we could sheer you could sheer they could sheer	I could be sheering you could be sheering he could be sheering we could be sheering you could be sheering they could be sheering
Perfect	V-ing perfect
I could have sheered you could have sheered he could have sheered we could have sheered you could have sheered they could have sheered	I could have been sheering you could have been sheering he could have been sheering we could have been sheering you could have been sheering they could have been sheering

Negation

Simple form	V-ing form
I could not sheer you could not sheer he could not sheer we could not sheer you could not sheer they could not sheer	I could not be sheering you could not be sheering he could not be sheering we could not be sheering you could not be sheering they could not be sheering
Perfect	V-ing perfect
I could not have sheered you could not have sheered he could not have sheered we could not have sheered you could not have sheered they could not have sheered	I could not have been sheering you could not have been sheering he could not have been sheering we could not have been sheering you could not have been sheering they could not have been sheering

Interrogative form

Simple form	V-ing form
could I sheer? could you sheer? could he sheer? could we sheer? could you sheer? could they sheer?	could I be sheering? could you be sheering? could he be sheering? could we be sheering? could you be sheering? could they be sheering?
Perfect	V-ing perfect
could I have sheered? could you have sheered? could he have sheered? could we have sheered? could you have sheered? could they have sheered?	could I have been sheering? could you have been sheering? could he have been sheering? could we have been sheering? could you have been sheering? could they have been sheering?

Interro-negative form

Simple form	V-ing form
could I not sheer? could you not sheer? could he not sheer? could we not sheer? could you not sheer? could they not sheer?	could I not be sheering? could you not be sheering? could he not be sheering? could we not be sheering? could you not be sheering? could they not be sheering?
Perfect	V-ing perfect
could I not have sheered? could you not have sheered? could he not have sheered? could we not have sheered? could you not have sheered? could they not have sheered?	could I not have been sheering? could you not have been sheering? could he not have been sheering? could we not have been sheering? could you not have been sheering? could they not have been sheering?