could barber
Regular verb: barber - barbered- barbered

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

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

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

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