English verb conjugation
COULD UNLEARN

Regular verb: unlearn - unlearned - unlearned

Affirmation

Simple form	V-ing form
I could unlearn you could unlearn he could unlearn we could unlearn you could unlearn they could unlearn	I could be unlearning you could be unlearning he could be unlearning we could be unlearning you could be unlearning they could be unlearning
Perfect	V-ing perfect
I could have unlearned you could have unlearned he could have unlearned we could have unlearned you could have unlearned they could have unlearned	I could have been unlearning you could have been unlearning he could have been unlearning we could have been unlearning you could have been unlearning they could have been unlearning

Negation

Simple form	V-ing form
I couldn't unlearn you couldn't unlearn he couldn't unlearn we couldn't unlearn you couldn't unlearn they couldn't unlearn	I couldn't be unlearning you couldn't be unlearning he couldn't be unlearning we couldn't be unlearning you couldn't be unlearning they couldn't be unlearning
Perfect	V-ing perfect
I couldn't have unlearned you couldn't have unlearned he couldn't have unlearned we couldn't have unlearned you couldn't have unlearned they couldn't have unlearned	I couldn't have been unlearning you couldn't have been unlearning he couldn't have been unlearning we couldn't have been unlearning you couldn't have been unlearning they couldn't have been unlearning

Interrogative form

Simple form	V-ing form
could I unlearn? could you unlearn? could he unlearn? could we unlearn? could you unlearn? could they unlearn?	could I be unlearning? could you be unlearning? could he be unlearning? could we be unlearning? could you be unlearning? could they be unlearning?
Perfect	V-ing perfect
could I have unlearned? could you have unlearned? could he have unlearned? could we have unlearned? could you have unlearned? could they have unlearned?	could I have been unlearning? could you have been unlearning? could he have been unlearning? could we have been unlearning? could you have been unlearning? could they have been unlearning?

Interro-negative form

Simple form	V-ing form
couldn't I unlearn? couldn't you unlearn? couldn't he unlearn? couldn't we unlearn? couldn't you unlearn? couldn't they unlearn?	couldn't I be unlearning? couldn't you be unlearning? couldn't he be unlearning? couldn't we be unlearning? couldn't you be unlearning? couldn't they be unlearning?
Perfect	V-ing perfect
couldn't I have unlearned? couldn't you have unlearned? couldn't he have unlearned? couldn't we have unlearned? couldn't you have unlearned? couldn't they have unlearned?	couldn't I have been unlearning? couldn't you have been unlearning? couldn't he have been unlearning? couldn't we have been unlearning? couldn't you have been unlearning? couldn't they have been unlearning?