I can unlearn you can unlearn he can unlearn we can unlearn you can unlearn they can unlearn
V-ing form
I can be unlearning you can be unlearning he can be unlearning we can be unlearning you can be unlearning they can be unlearning
Perfect
I can have unlearned you can have unlearned he can have unlearned we can have unlearned you can have unlearned they can have unlearned
V-ing perfect
I can have been unlearning you can have been unlearning he can have been unlearning we can have been unlearning you can have been unlearning they can have been unlearning
Negation
Simple form
I can't unlearn you can't unlearn he can't unlearn we can't unlearn you can't unlearn they can't unlearn
V-ing form
I can't be unlearning you can't be unlearning he can't be unlearning we can't be unlearning you can't be unlearning they can't be unlearning
Perfect
I can't have unlearned you can't have unlearned he can't have unlearned we can't have unlearned you can't have unlearned they can't have unlearned
V-ing perfect
I can't have been unlearning you can't have been unlearning he can't have been unlearning we can't have been unlearning you can't have been unlearning they can't have been unlearning
Interrogative form
Simple form
can I unlearn? can you unlearn? can he unlearn? can we unlearn? can you unlearn? can they unlearn?
V-ing form
can I be unlearning? can you be unlearning? can he be unlearning? can we be unlearning? can you be unlearning? can they be unlearning?
Perfect
can I have unlearned? can you have unlearned? can he have unlearned? can we have unlearned? can you have unlearned? can they have unlearned?
V-ing perfect
can I have been unlearning? can you have been unlearning? can he have been unlearning? can we have been unlearning? can you have been unlearning? can they have been unlearning?
Interro-negative form
Simple form
can't I unlearn? can't you unlearn? can't he unlearn? can't we unlearn? can't you unlearn? can't they unlearn?
V-ing form
can't I be unlearning? can't you be unlearning? can't he be unlearning? can't we be unlearning? can't you be unlearning? can't they be unlearning?
Perfect
can't I have unlearned? can't you have unlearned? can't he have unlearned? can't we have unlearned? can't you have unlearned? can't they have unlearned?
V-ing perfect
can't I have been unlearning? can't you have been unlearning? can't he have been unlearning? can't we have been unlearning? can't you have been unlearning? can't they have been unlearning?