I could bestow you could bestow he could bestow we could bestow you could bestow they could bestow
V-ing form
I could be bestowing you could be bestowing he could be bestowing we could be bestowing you could be bestowing they could be bestowing
Perfect
I could have bestowed you could have bestowed he could have bestowed we could have bestowed you could have bestowed they could have bestowed
V-ing perfect
I could have been bestowing you could have been bestowing he could have been bestowing we could have been bestowing you could have been bestowing they could have been bestowing
Negation
Simple form
I couldn't bestow you couldn't bestow he couldn't bestow we couldn't bestow you couldn't bestow they couldn't bestow
V-ing form
I couldn't be bestowing you couldn't be bestowing he couldn't be bestowing we couldn't be bestowing you couldn't be bestowing they couldn't be bestowing
Perfect
I couldn't have bestowed you couldn't have bestowed he couldn't have bestowed we couldn't have bestowed you couldn't have bestowed they couldn't have bestowed
V-ing perfect
I couldn't have been bestowing you couldn't have been bestowing he couldn't have been bestowing we couldn't have been bestowing you couldn't have been bestowing they couldn't have been bestowing
Interrogative form
Simple form
could I bestow? could you bestow? could he bestow? could we bestow? could you bestow? could they bestow?
V-ing form
could I be bestowing? could you be bestowing? could he be bestowing? could we be bestowing? could you be bestowing? could they be bestowing?
Perfect
could I have bestowed? could you have bestowed? could he have bestowed? could we have bestowed? could you have bestowed? could they have bestowed?
V-ing perfect
could I have been bestowing? could you have been bestowing? could he have been bestowing? could we have been bestowing? could you have been bestowing? could they have been bestowing?
Interro-negative form
Simple form
couldn't I bestow? couldn't you bestow? couldn't he bestow? couldn't we bestow? couldn't you bestow? couldn't they bestow?
V-ing form
couldn't I be bestowing? couldn't you be bestowing? couldn't he be bestowing? couldn't we be bestowing? couldn't you be bestowing? couldn't they be bestowing?
Perfect
couldn't I have bestowed? couldn't you have bestowed? couldn't he have bestowed? couldn't we have bestowed? couldn't you have bestowed? couldn't they have bestowed?
V-ing perfect
couldn't I have been bestowing? couldn't you have been bestowing? couldn't he have been bestowing? couldn't we have been bestowing? couldn't you have been bestowing? couldn't they have been bestowing?