I could comfort you could comfort he could comfort we could comfort you could comfort they could comfort
V-ing form
I could be comforting you could be comforting he could be comforting we could be comforting you could be comforting they could be comforting
Perfect
I could have comforted you could have comforted he could have comforted we could have comforted you could have comforted they could have comforted
V-ing perfect
I could have been comforting you could have been comforting he could have been comforting we could have been comforting you could have been comforting they could have been comforting
Negation
Simple form
I could not comfort you could not comfort he could not comfort we could not comfort you could not comfort they could not comfort
V-ing form
I could not be comforting you could not be comforting he could not be comforting we could not be comforting you could not be comforting they could not be comforting
Perfect
I could not have comforted you could not have comforted he could not have comforted we could not have comforted you could not have comforted they could not have comforted
V-ing perfect
I could not have been comforting you could not have been comforting he could not have been comforting we could not have been comforting you could not have been comforting they could not have been comforting
Interrogative form
Simple form
could I comfort? could you comfort? could he comfort? could we comfort? could you comfort? could they comfort?
V-ing form
could I be comforting? could you be comforting? could he be comforting? could we be comforting? could you be comforting? could they be comforting?
Perfect
could I have comforted? could you have comforted? could he have comforted? could we have comforted? could you have comforted? could they have comforted?
V-ing perfect
could I have been comforting? could you have been comforting? could he have been comforting? could we have been comforting? could you have been comforting? could they have been comforting?
Interro-negative form
Simple form
could I not comfort? could you not comfort? could he not comfort? could we not comfort? could you not comfort? could they not comfort?
V-ing form
could I not be comforting? could you not be comforting? could he not be comforting? could we not be comforting? could you not be comforting? could they not be comforting?
Perfect
could I not have comforted? could you not have comforted? could he not have comforted? could we not have comforted? could you not have comforted? could they not have comforted?
V-ing perfect
could I not have been comforting? could you not have been comforting? could he not have been comforting? could we not have been comforting? could you not have been comforting? could they not have been comforting?