English verb conjugation
MUST CHURN

Regular verb: churn - churned - churned

Affirmation

Simple form	V-ing form
I must churn you must churn he must churn we must churn you must churn they must churn	I must be churning you must be churning he must be churning we must be churning you must be churning they must be churning
Perfect	V-ing perfect
I must have churned you must have churned he must have churned we must have churned you must have churned they must have churned	I must have been churning you must have been churning he must have been churning we must have been churning you must have been churning they must have been churning

Negation

Simple form	V-ing form
I must not churn you must not churn he must not churn we must not churn you must not churn they must not churn	I must not be churning you must not be churning he must not be churning we must not be churning you must not be churning they must not be churning
Perfect	V-ing perfect
I must not have churned you must not have churned he must not have churned we must not have churned you must not have churned they must not have churned	I must not have been churning you must not have been churning he must not have been churning we must not have been churning you must not have been churning they must not have been churning

Interrogative form

Simple form	V-ing form
must I churn? must you churn? must he churn? must we churn? must you churn? must they churn?	must I be churning? must you be churning? must he be churning? must we be churning? must you be churning? must they be churning?
Perfect	V-ing perfect
must I have churned? must you have churned? must he have churned? must we have churned? must you have churned? must they have churned?	must I have been churning? must you have been churning? must he have been churning? must we have been churning? must you have been churning? must they have been churning?

Interro-negative form

Simple form	V-ing form
must I not churn? must you not churn? must he not churn? must we not churn? must you not churn? must they not churn?	must I not be churning? must you not be churning? must he not be churning? must we not be churning? must you not be churning? must they not be churning?
Perfect	V-ing perfect
must I not have churned? must you not have churned? must he not have churned? must we not have churned? must you not have churned? must they not have churned?	must I not have been churning? must you not have been churning? must he not have been churning? must we not have been churning? must you not have been churning? must they not have been churning?