must churn
Regular verb: churn - churned- churned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?