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 couldn't sheet you couldn't sheet he couldn't sheet we couldn't sheet you couldn't sheet they couldn't sheet	I couldn't be sheeting you couldn't be sheeting he couldn't be sheeting we couldn't be sheeting you couldn't be sheeting they couldn't be sheeting
Perfect	V-ing perfect
I couldn't have sheeted you couldn't have sheeted he couldn't have sheeted we couldn't have sheeted you couldn't have sheeted they couldn't have sheeted	I couldn't have been sheeting you couldn't have been sheeting he couldn't have been sheeting we couldn't have been sheeting you couldn't have been sheeting they couldn't 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
couldn't I sheet? couldn't you sheet? couldn't he sheet? couldn't we sheet? couldn't you sheet? couldn't they sheet?	couldn't I be sheeting? couldn't you be sheeting? couldn't he be sheeting? couldn't we be sheeting? couldn't you be sheeting? couldn't they be sheeting?
Perfect	V-ing perfect
couldn't I have sheeted? couldn't you have sheeted? couldn't he have sheeted? couldn't we have sheeted? couldn't you have sheeted? couldn't they have sheeted?	couldn't I have been sheeting? couldn't you have been sheeting? couldn't he have been sheeting? couldn't we have been sheeting? couldn't you have been sheeting? couldn't they have been sheeting?