English verb conjugation
CAN HEARKEN

Regular verb: hearken - hearkened - hearkened

Affirmation

Simple form	V-ing form
I can hearken you can hearken he can hearken we can hearken you can hearken they can hearken	I can be hearkening you can be hearkening he can be hearkening we can be hearkening you can be hearkening they can be hearkening
Perfect	V-ing perfect
I can have hearkened you can have hearkened he can have hearkened we can have hearkened you can have hearkened they can have hearkened	I can have been hearkening you can have been hearkening he can have been hearkening we can have been hearkening you can have been hearkening they can have been hearkening

Negation

Simple form	V-ing form
I can't hearken you can't hearken he can't hearken we can't hearken you can't hearken they can't hearken	I can't be hearkening you can't be hearkening he can't be hearkening we can't be hearkening you can't be hearkening they can't be hearkening
Perfect	V-ing perfect
I can't have hearkened you can't have hearkened he can't have hearkened we can't have hearkened you can't have hearkened they can't have hearkened	I can't have been hearkening you can't have been hearkening he can't have been hearkening we can't have been hearkening you can't have been hearkening they can't have been hearkening

Interrogative form

Simple form	V-ing form
can I hearken? can you hearken? can he hearken? can we hearken? can you hearken? can they hearken?	can I be hearkening? can you be hearkening? can he be hearkening? can we be hearkening? can you be hearkening? can they be hearkening?
Perfect	V-ing perfect
can I have hearkened? can you have hearkened? can he have hearkened? can we have hearkened? can you have hearkened? can they have hearkened?	can I have been hearkening? can you have been hearkening? can he have been hearkening? can we have been hearkening? can you have been hearkening? can they have been hearkening?

Interro-negative form

Simple form	V-ing form
can't I hearken? can't you hearken? can't he hearken? can't we hearken? can't you hearken? can't they hearken?	can't I be hearkening? can't you be hearkening? can't he be hearkening? can't we be hearkening? can't you be hearkening? can't they be hearkening?
Perfect	V-ing perfect
can't I have hearkened? can't you have hearkened? can't he have hearkened? can't we have hearkened? can't you have hearkened? can't they have hearkened?	can't I have been hearkening? can't you have been hearkening? can't he have been hearkening? can't we have been hearkening? can't you have been hearkening? can't they have been hearkening?