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 can't recover you can't recover he can't recover we can't recover you can't recover they can't recover
V-ing form
I can't be recovering you can't be recovering he can't be recovering we can't be recovering you can't be recovering they can't be recovering
Perfect
I can't have recovered you can't have recovered he can't have recovered we can't have recovered you can't have recovered they can't have recovered
V-ing perfect
I can't have been recovering you can't have been recovering he can't have been recovering we can't have been recovering you can't have been recovering they can't 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't I recover? can't you recover? can't he recover? can't we recover? can't you recover? can't they recover?
V-ing form
can't I be recovering? can't you be recovering? can't he be recovering? can't we be recovering? can't you be recovering? can't they be recovering?
Perfect
can't I have recovered? can't you have recovered? can't he have recovered? can't we have recovered? can't you have recovered? can't they have recovered?
V-ing perfect
can't I have been recovering? can't you have been recovering? can't he have been recovering? can't we have been recovering? can't you have been recovering? can't they have been recovering?