English verb conjugation
CAN YARN

Regular verb: yarn - yarned - yarned

Affirmation

Simple form	V-ing form
I can yarn you can yarn he can yarn we can yarn you can yarn they can yarn	I can be yarning you can be yarning he can be yarning we can be yarning you can be yarning they can be yarning
Perfect	V-ing perfect
I can have yarned you can have yarned he can have yarned we can have yarned you can have yarned they can have yarned	I can have been yarning you can have been yarning he can have been yarning we can have been yarning you can have been yarning they can have been yarning

Negation

Simple form	V-ing form
I can't yarn you can't yarn he can't yarn we can't yarn you can't yarn they can't yarn	I can't be yarning you can't be yarning he can't be yarning we can't be yarning you can't be yarning they can't be yarning
Perfect	V-ing perfect
I can't have yarned you can't have yarned he can't have yarned we can't have yarned you can't have yarned they can't have yarned	I can't have been yarning you can't have been yarning he can't have been yarning we can't have been yarning you can't have been yarning they can't have been yarning

Interrogative form

Simple form	V-ing form
can I yarn? can you yarn? can he yarn? can we yarn? can you yarn? can they yarn?	can I be yarning? can you be yarning? can he be yarning? can we be yarning? can you be yarning? can they be yarning?
Perfect	V-ing perfect
can I have yarned? can you have yarned? can he have yarned? can we have yarned? can you have yarned? can they have yarned?	can I have been yarning? can you have been yarning? can he have been yarning? can we have been yarning? can you have been yarning? can they have been yarning?

Interro-negative form

Simple form	V-ing form
can't I yarn? can't you yarn? can't he yarn? can't we yarn? can't you yarn? can't they yarn?	can't I be yarning? can't you be yarning? can't he be yarning? can't we be yarning? can't you be yarning? can't they be yarning?
Perfect	V-ing perfect
can't I have yarned? can't you have yarned? can't he have yarned? can't we have yarned? can't you have yarned? can't they have yarned?	can't I have been yarning? can't you have been yarning? can't he have been yarning? can't we have been yarning? can't you have been yarning? can't they have been yarning?