English verb conjugation
COULD COCHAIR

Regular verb: cochair - cochaired - cochaired

Affirmation

Simple form	V-ing form
I could cochair you could cochair he could cochair we could cochair you could cochair they could cochair	I could be cochairing you could be cochairing he could be cochairing we could be cochairing you could be cochairing they could be cochairing
Perfect	V-ing perfect
I could have cochaired you could have cochaired he could have cochaired we could have cochaired you could have cochaired they could have cochaired	I could have been cochairing you could have been cochairing he could have been cochairing we could have been cochairing you could have been cochairing they could have been cochairing

Negation

Simple form	V-ing form
I couldn't cochair you couldn't cochair he couldn't cochair we couldn't cochair you couldn't cochair they couldn't cochair	I couldn't be cochairing you couldn't be cochairing he couldn't be cochairing we couldn't be cochairing you couldn't be cochairing they couldn't be cochairing
Perfect	V-ing perfect
I couldn't have cochaired you couldn't have cochaired he couldn't have cochaired we couldn't have cochaired you couldn't have cochaired they couldn't have cochaired	I couldn't have been cochairing you couldn't have been cochairing he couldn't have been cochairing we couldn't have been cochairing you couldn't have been cochairing they couldn't have been cochairing

Interrogative form

Simple form	V-ing form
could I cochair? could you cochair? could he cochair? could we cochair? could you cochair? could they cochair?	could I be cochairing? could you be cochairing? could he be cochairing? could we be cochairing? could you be cochairing? could they be cochairing?
Perfect	V-ing perfect
could I have cochaired? could you have cochaired? could he have cochaired? could we have cochaired? could you have cochaired? could they have cochaired?	could I have been cochairing? could you have been cochairing? could he have been cochairing? could we have been cochairing? could you have been cochairing? could they have been cochairing?

Interro-negative form

Simple form	V-ing form
couldn't I cochair? couldn't you cochair? couldn't he cochair? couldn't we cochair? couldn't you cochair? couldn't they cochair?	couldn't I be cochairing? couldn't you be cochairing? couldn't he be cochairing? couldn't we be cochairing? couldn't you be cochairing? couldn't they be cochairing?
Perfect	V-ing perfect
couldn't I have cochaired? couldn't you have cochaired? couldn't he have cochaired? couldn't we have cochaired? couldn't you have cochaired? couldn't they have cochaired?	couldn't I have been cochairing? couldn't you have been cochairing? couldn't he have been cochairing? couldn't we have been cochairing? couldn't you have been cochairing? couldn't they have been cochairing?