English verb conjugation
MUST PEEN

Regular verb: peen - peened - peened

Affirmation

Simple form	V-ing form
I must peen you must peen he must peen we must peen you must peen they must peen	I must be peening you must be peening he must be peening we must be peening you must be peening they must be peening
Perfect	V-ing perfect
I must have peened you must have peened he must have peened we must have peened you must have peened they must have peened	I must have been peening you must have been peening he must have been peening we must have been peening you must have been peening they must have been peening

Negation

Simple form	V-ing form
I mustn't peen you mustn't peen he mustn't peen we mustn't peen you mustn't peen they mustn't peen	I mustn't be peening you mustn't be peening he mustn't be peening we mustn't be peening you mustn't be peening they mustn't be peening
Perfect	V-ing perfect
I mustn't have peened you mustn't have peened he mustn't have peened we mustn't have peened you mustn't have peened they mustn't have peened	I mustn't have been peening you mustn't have been peening he mustn't have been peening we mustn't have been peening you mustn't have been peening they mustn't have been peening

Interrogative form

Simple form	V-ing form
must I peen? must you peen? must he peen? must we peen? must you peen? must they peen?	must I be peening? must you be peening? must he be peening? must we be peening? must you be peening? must they be peening?
Perfect	V-ing perfect
must I have peened? must you have peened? must he have peened? must we have peened? must you have peened? must they have peened?	must I have been peening? must you have been peening? must he have been peening? must we have been peening? must you have been peening? must they have been peening?

Interro-negative form

Simple form	V-ing form
mustn't I peen? mustn't you peen? mustn't he peen? mustn't we peen? mustn't you peen? mustn't they peen?	mustn't I be peening? mustn't you be peening? mustn't he be peening? mustn't we be peening? mustn't you be peening? mustn't they be peening?
Perfect	V-ing perfect
mustn't I have peened? mustn't you have peened? mustn't he have peened? mustn't we have peened? mustn't you have peened? mustn't they have peened?	mustn't I have been peening? mustn't you have been peening? mustn't he have been peening? mustn't we have been peening? mustn't you have been peening? mustn't they have been peening?