must peen
Regular verb: peen - peened- peened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must peen
you must peen
she must peen
we must peen
you must peen
they must peen 	I must be peening
you must be peening
she must be peening
we must be peening
you must be peening
they must be peening	I must have peened
you must have peened
she 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
she 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 	Perfect 	V-ing perfect 	
I must not peen
you must not peen
she must not peen
we must not peen
you must not peen
they must not peen 	I must not be peening
you must not be peening
she must not be peening
we must not be peening
you must not be peening
they must not be peening	I must not have peened
you must not have peened
she must not have peened
we must not have peened
you must not have peened
they must not have peened	I must not have been peening
you must not have been peening
she must not have been peening
we must not have been peening
you must not have been peening
they must not have been peening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I peen?
must you peen?
must she peen?
must we peen?
must you peen?
must they peen? 	must I be peening?
must you be peening?
must she be peening?
must we be peening?
must you be peening?
must they be peening? 	must I have peened?
must you have peened?
must she 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 she 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 	Perfect 	V-ing perfect 	
must I not peen?
must you not peen?
must she not peen?
must we not peen?
must you not peen?
must they not peen? 	must I not be peening?
must you not be peening?
must she not be peening?
must we not be peening?
must you not be peening?
must they not be peening? 	must I not have peened?
must you not have peened?
must she not have peened?
must we not have peened?
must you not have peened?
must they not have peened? 	must I not have been peening?
must you not have been peening?
must she not have been peening?
must we not have been peening?
must you not have been peening?
must they not have been peening?