I could benefice you could benefice she could benefice we could benefice you could benefice they could benefice
V-ing form
I could be beneficing you could be beneficing she could be beneficing we could be beneficing you could be beneficing they could be beneficing
Perfect
I could have beneficed you could have beneficed she could have beneficed we could have beneficed you could have beneficed they could have beneficed
V-ing perfect
I could have been beneficing you could have been beneficing she could have been beneficing we could have been beneficing you could have been beneficing they could have been beneficing
Negation
Simple form
I could not benefice you could not benefice she could not benefice we could not benefice you could not benefice they could not benefice
V-ing form
I could not be beneficing you could not be beneficing she could not be beneficing we could not be beneficing you could not be beneficing they could not be beneficing
Perfect
I could not have beneficed you could not have beneficed she could not have beneficed we could not have beneficed you could not have beneficed they could not have beneficed
V-ing perfect
I could not have been beneficing you could not have been beneficing she could not have been beneficing we could not have been beneficing you could not have been beneficing they could not have been beneficing
Interrogative form
Simple form
could I benefice? could you benefice? could she benefice? could we benefice? could you benefice? could they benefice?
V-ing form
could I be beneficing? could you be beneficing? could she be beneficing? could we be beneficing? could you be beneficing? could they be beneficing?
Perfect
could I have beneficed? could you have beneficed? could she have beneficed? could we have beneficed? could you have beneficed? could they have beneficed?
V-ing perfect
could I have been beneficing? could you have been beneficing? could she have been beneficing? could we have been beneficing? could you have been beneficing? could they have been beneficing?
Interro-negative form
Simple form
could I not benefice? could you not benefice? could she not benefice? could we not benefice? could you not benefice? could they not benefice?
V-ing form
could I not be beneficing? could you not be beneficing? could she not be beneficing? could we not be beneficing? could you not be beneficing? could they not be beneficing?
Perfect
could I not have beneficed? could you not have beneficed? could she not have beneficed? could we not have beneficed? could you not have beneficed? could they not have beneficed?
V-ing perfect
could I not have been beneficing? could you not have been beneficing? could she not have been beneficing? could we not have been beneficing? could you not have been beneficing? could they not have been beneficing?