I can lose you can lose he can lose we can lose you can lose they can lose
V-ing form
I can be losing you can be losing he can be losing we can be losing you can be losing they can be losing
Perfect
I can have lost you can have lost he can have lost we can have lost you can have lost they can have lost
V-ing perfect
I can have been losing you can have been losing he can have been losing we can have been losing you can have been losing they can have been losing
Negation
Simple form
I can't lose you can't lose he can't lose we can't lose you can't lose they can't lose
V-ing form
I can't be losing you can't be losing he can't be losing we can't be losing you can't be losing they can't be losing
Perfect
I can't have lost you can't have lost he can't have lost we can't have lost you can't have lost they can't have lost
V-ing perfect
I can't have been losing you can't have been losing he can't have been losing we can't have been losing you can't have been losing they can't have been losing
Interrogative form
Simple form
can I lose? can you lose? can he lose? can we lose? can you lose? can they lose?
V-ing form
can I be losing? can you be losing? can he be losing? can we be losing? can you be losing? can they be losing?
Perfect
can I have lost? can you have lost? can he have lost? can we have lost? can you have lost? can they have lost?
V-ing perfect
can I have been losing? can you have been losing? can he have been losing? can we have been losing? can you have been losing? can they have been losing?
Interro-negative form
Simple form
can't I lose? can't you lose? can't he lose? can't we lose? can't you lose? can't they lose?
V-ing form
can't I be losing? can't you be losing? can't he be losing? can't we be losing? can't you be losing? can't they be losing?
Perfect
can't I have lost? can't you have lost? can't he have lost? can't we have lost? can't you have lost? can't they have lost?
V-ing perfect
can't I have been losing? can't you have been losing? can't he have been losing? can't we have been losing? can't you have been losing? can't they have been losing?