must barber
Regular verb: barber - barbered- barbered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must barber
you must barber
she must barber
we must barber
you must barber
they must barber 	I must be barbering
you must be barbering
she must be barbering
we must be barbering
you must be barbering
they must be barbering	I must have barbered
you must have barbered
she must have barbered
we must have barbered
you must have barbered
they must have barbered	I must have been barbering
you must have been barbering
she must have been barbering
we must have been barbering
you must have been barbering
they must have been barbering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not barber
you must not barber
she must not barber
we must not barber
you must not barber
they must not barber 	I must not be barbering
you must not be barbering
she must not be barbering
we must not be barbering
you must not be barbering
they must not be barbering	I must not have barbered
you must not have barbered
she must not have barbered
we must not have barbered
you must not have barbered
they must not have barbered	I must not have been barbering
you must not have been barbering
she must not have been barbering
we must not have been barbering
you must not have been barbering
they must not have been barbering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I barber?
must you barber?
must she barber?
must we barber?
must you barber?
must they barber? 	must I be barbering?
must you be barbering?
must she be barbering?
must we be barbering?
must you be barbering?
must they be barbering? 	must I have barbered?
must you have barbered?
must she have barbered?
must we have barbered?
must you have barbered?
must they have barbered? 	must I have been barbering?
must you have been barbering?
must she have been barbering?
must we have been barbering?
must you have been barbering?
must they have been barbering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not barber?
must you not barber?
must she not barber?
must we not barber?
must you not barber?
must they not barber? 	must I not be barbering?
must you not be barbering?
must she not be barbering?
must we not be barbering?
must you not be barbering?
must they not be barbering? 	must I not have barbered?
must you not have barbered?
must she not have barbered?
must we not have barbered?
must you not have barbered?
must they not have barbered? 	must I not have been barbering?
must you not have been barbering?
must she not have been barbering?
must we not have been barbering?
must you not have been barbering?
must they not have been barbering?