English verb conjugation
COULD SHEAVE

Regular verb: sheave - sheaved - sheaved

Affirmation

Simple form	V-ing form
I could sheave you could sheave she could sheave we could sheave you could sheave they could sheave	I could be sheaving you could be sheaving she could be sheaving we could be sheaving you could be sheaving they could be sheaving
Perfect	V-ing perfect
I could have sheaved you could have sheaved she could have sheaved we could have sheaved you could have sheaved they could have sheaved	I could have been sheaving you could have been sheaving she could have been sheaving we could have been sheaving you could have been sheaving they could have been sheaving

Negation

Simple form	V-ing form
I could not sheave you could not sheave she could not sheave we could not sheave you could not sheave they could not sheave	I could not be sheaving you could not be sheaving she could not be sheaving we could not be sheaving you could not be sheaving they could not be sheaving
Perfect	V-ing perfect
I could not have sheaved you could not have sheaved she could not have sheaved we could not have sheaved you could not have sheaved they could not have sheaved	I could not have been sheaving you could not have been sheaving she could not have been sheaving we could not have been sheaving you could not have been sheaving they could not have been sheaving

Interrogative form

Simple form	V-ing form
could I sheave? could you sheave? could she sheave? could we sheave? could you sheave? could they sheave?	could I be sheaving? could you be sheaving? could she be sheaving? could we be sheaving? could you be sheaving? could they be sheaving?
Perfect	V-ing perfect
could I have sheaved? could you have sheaved? could she have sheaved? could we have sheaved? could you have sheaved? could they have sheaved?	could I have been sheaving? could you have been sheaving? could she have been sheaving? could we have been sheaving? could you have been sheaving? could they have been sheaving?

Interro-negative form

Simple form	V-ing form
could I not sheave? could you not sheave? could she not sheave? could we not sheave? could you not sheave? could they not sheave?	could I not be sheaving? could you not be sheaving? could she not be sheaving? could we not be sheaving? could you not be sheaving? could they not be sheaving?
Perfect	V-ing perfect
could I not have sheaved? could you not have sheaved? could she not have sheaved? could we not have sheaved? could you not have sheaved? could they not have sheaved?	could I not have been sheaving? could you not have been sheaving? could she not have been sheaving? could we not have been sheaving? could you not have been sheaving? could they not have been sheaving?