English verb conjugation
MUST HEARKEN

Regular verb: hearken - hearkened - hearkened

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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