English verb conjugation
COULD SHEET

Regular verb: sheet - sheeted - sheeted

Affirmation

Simple form	V-ing form
I could sheet you could sheet he could sheet we could sheet you could sheet they could sheet	I could be sheeting you could be sheeting he could be sheeting we could be sheeting you could be sheeting they could be sheeting
Perfect	V-ing perfect
I could have sheeted you could have sheeted he could have sheeted we could have sheeted you could have sheeted they could have sheeted	I could have been sheeting you could have been sheeting he could have been sheeting we could have been sheeting you could have been sheeting they could have been sheeting

Negation

Simple form	V-ing form
I could not sheet you could not sheet he could not sheet we could not sheet you could not sheet they could not sheet	I could not be sheeting you could not be sheeting he could not be sheeting we could not be sheeting you could not be sheeting they could not be sheeting
Perfect	V-ing perfect
I could not have sheeted you could not have sheeted he could not have sheeted we could not have sheeted you could not have sheeted they could not have sheeted	I could not have been sheeting you could not have been sheeting he could not have been sheeting we could not have been sheeting you could not have been sheeting they could not have been sheeting

Interrogative form

Simple form	V-ing form
could I sheet? could you sheet? could he sheet? could we sheet? could you sheet? could they sheet?	could I be sheeting? could you be sheeting? could he be sheeting? could we be sheeting? could you be sheeting? could they be sheeting?
Perfect	V-ing perfect
could I have sheeted? could you have sheeted? could he have sheeted? could we have sheeted? could you have sheeted? could they have sheeted?	could I have been sheeting? could you have been sheeting? could he have been sheeting? could we have been sheeting? could you have been sheeting? could they have been sheeting?

Interro-negative form

Simple form	V-ing form
could I not sheet? could you not sheet? could he not sheet? could we not sheet? could you not sheet? could they not sheet?	could I not be sheeting? could you not be sheeting? could he not be sheeting? could we not be sheeting? could you not be sheeting? could they not be sheeting?
Perfect	V-ing perfect
could I not have sheeted? could you not have sheeted? could he not have sheeted? could we not have sheeted? could you not have sheeted? could they not have sheeted?	could I not have been sheeting? could you not have been sheeting? could he not have been sheeting? could we not have been sheeting? could you not have been sheeting? could they not have been sheeting?