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