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