English verb conjugation
MUST UNTEACH

Irregular verb: unteach - untaught - untaught

Affirmation

Simple form	V-ing form
I must unteach you must unteach he must unteach we must unteach you must unteach they must unteach	I must be unteaching you must be unteaching he must be unteaching we must be unteaching you must be unteaching they must be unteaching
Perfect	V-ing perfect
I must have untaught you must have untaught he must have untaught we must have untaught you must have untaught they must have untaught	I must have been unteaching you must have been unteaching he must have been unteaching we must have been unteaching you must have been unteaching they must have been unteaching

Negation

Simple form	V-ing form
I mustn't unteach you mustn't unteach he mustn't unteach we mustn't unteach you mustn't unteach they mustn't unteach	I mustn't be unteaching you mustn't be unteaching he mustn't be unteaching we mustn't be unteaching you mustn't be unteaching they mustn't be unteaching
Perfect	V-ing perfect
I mustn't have untaught you mustn't have untaught he mustn't have untaught we mustn't have untaught you mustn't have untaught they mustn't have untaught	I mustn't have been unteaching you mustn't have been unteaching he mustn't have been unteaching we mustn't have been unteaching you mustn't have been unteaching they mustn't have been unteaching

Interrogative form

Simple form	V-ing form
must I unteach? must you unteach? must he unteach? must we unteach? must you unteach? must they unteach?	must I be unteaching? must you be unteaching? must he be unteaching? must we be unteaching? must you be unteaching? must they be unteaching?
Perfect	V-ing perfect
must I have untaught? must you have untaught? must he have untaught? must we have untaught? must you have untaught? must they have untaught?	must I have been unteaching? must you have been unteaching? must he have been unteaching? must we have been unteaching? must you have been unteaching? must they have been unteaching?

Interro-negative form

Simple form	V-ing form
mustn't I unteach? mustn't you unteach? mustn't he unteach? mustn't we unteach? mustn't you unteach? mustn't they unteach?	mustn't I be unteaching? mustn't you be unteaching? mustn't he be unteaching? mustn't we be unteaching? mustn't you be unteaching? mustn't they be unteaching?
Perfect	V-ing perfect
mustn't I have untaught? mustn't you have untaught? mustn't he have untaught? mustn't we have untaught? mustn't you have untaught? mustn't they have untaught?	mustn't I have been unteaching? mustn't you have been unteaching? mustn't he have been unteaching? mustn't we have been unteaching? mustn't you have been unteaching? mustn't they have been unteaching?