English verb conjugation
CAN COCHAIR

Regular verb: cochair - cochaired - cochaired

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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