I could recover you could recover she could recover we could recover you could recover they could recover
V-ing form
I could be recovering you could be recovering she could be recovering we could be recovering you could be recovering they could be recovering
Perfect
I could have recovered you could have recovered she could have recovered we could have recovered you could have recovered they could have recovered
V-ing perfect
I could have been recovering you could have been recovering she could have been recovering we could have been recovering you could have been recovering they could have been recovering
Negation
Simple form
I could not recover you could not recover she could not recover we could not recover you could not recover they could not recover
V-ing form
I could not be recovering you could not be recovering she could not be recovering we could not be recovering you could not be recovering they could not be recovering
Perfect
I could not have recovered you could not have recovered she could not have recovered we could not have recovered you could not have recovered they could not have recovered
V-ing perfect
I could not have been recovering you could not have been recovering she could not have been recovering we could not have been recovering you could not have been recovering they could not have been recovering
Interrogative form
Simple form
could I recover? could you recover? could she recover? could we recover? could you recover? could they recover?
V-ing form
could I be recovering? could you be recovering? could she be recovering? could we be recovering? could you be recovering? could they be recovering?
Perfect
could I have recovered? could you have recovered? could she have recovered? could we have recovered? could you have recovered? could they have recovered?
V-ing perfect
could I have been recovering? could you have been recovering? could she have been recovering? could we have been recovering? could you have been recovering? could they have been recovering?
Interro-negative form
Simple form
could I not recover? could you not recover? could she not recover? could we not recover? could you not recover? could they not recover?
V-ing form
could I not be recovering? could you not be recovering? could she not be recovering? could we not be recovering? could you not be recovering? could they not be recovering?
Perfect
could I not have recovered? could you not have recovered? could she not have recovered? could we not have recovered? could you not have recovered? could they not have recovered?
V-ing perfect
could I not have been recovering? could you not have been recovering? could she not have been recovering? could we not have been recovering? could you not have been recovering? could they not have been recovering?