I can recover you can recover he can recover we can recover you can recover they can recover
V-ing form
I can be recovering you can be recovering he can be recovering we can be recovering you can be recovering they can be recovering
Perfect
I can have recovered you can have recovered he 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 he 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 he cannot recover we cannot recover you cannot recover they cannot recover
V-ing form
I cannot be recovering you cannot be recovering he cannot be recovering we cannot be recovering you cannot be recovering they cannot be recovering
Perfect
I cannot have recovered you cannot have recovered he 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 he 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 he recover? can we recover? can you recover? can they recover?
V-ing form
can I be recovering? can you be recovering? can he be recovering? can we be recovering? can you be recovering? can they be recovering?
Perfect
can I have recovered? can you have recovered? can he 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 he 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 he 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 he 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 he 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 he not have been recovering? can we not have been recovering? can you not have been recovering? can they not have been recovering?