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 couldn't sheer you couldn't sheer he couldn't sheer we couldn't sheer you couldn't sheer they couldn't sheer	I couldn't be sheering you couldn't be sheering he couldn't be sheering we couldn't be sheering you couldn't be sheering they couldn't be sheering
Perfect	V-ing perfect
I couldn't have sheered you couldn't have sheered he couldn't have sheered we couldn't have sheered you couldn't have sheered they couldn't have sheered	I couldn't have been sheering you couldn't have been sheering he couldn't have been sheering we couldn't have been sheering you couldn't have been sheering they couldn't 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
couldn't I sheer? couldn't you sheer? couldn't he sheer? couldn't we sheer? couldn't you sheer? couldn't they sheer?	couldn't I be sheering? couldn't you be sheering? couldn't he be sheering? couldn't we be sheering? couldn't you be sheering? couldn't they be sheering?
Perfect	V-ing perfect
couldn't I have sheered? couldn't you have sheered? couldn't he have sheered? couldn't we have sheered? couldn't you have sheered? couldn't they have sheered?	couldn't I have been sheering? couldn't you have been sheering? couldn't he have been sheering? couldn't we have been sheering? couldn't you have been sheering? couldn't they have been sheering?