could barb
Regular verb: barb - barbed- barbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could barb
you could barb
she could barb
we could barb
you could barb
they could barb 	I could be barbing
you could be barbing
she could be barbing
we could be barbing
you could be barbing
they could be barbing	I could have barbed
you could have barbed
she could have barbed
we could have barbed
you could have barbed
they could have barbed	I could have been barbing
you could have been barbing
she could have been barbing
we could have been barbing
you could have been barbing
they could have been barbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't barb
you couldn't barb
she couldn't barb
we couldn't barb
you couldn't barb
they couldn't barb 	I couldn't be barbing
you couldn't be barbing
she couldn't be barbing
we couldn't be barbing
you couldn't be barbing
they couldn't be barbing	I couldn't have barbed
you couldn't have barbed
she couldn't have barbed
we couldn't have barbed
you couldn't have barbed
they couldn't have barbed	I couldn't have been barbing
you couldn't have been barbing
she couldn't have been barbing
we couldn't have been barbing
you couldn't have been barbing
they couldn't have been barbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I barb?
could you barb?
could she barb?
could we barb?
could you barb?
could they barb? 	could I be barbing?
could you be barbing?
could she be barbing?
could we be barbing?
could you be barbing?
could they be barbing? 	could I have barbed?
could you have barbed?
could she have barbed?
could we have barbed?
could you have barbed?
could they have barbed? 	could I have been barbing?
could you have been barbing?
could she have been barbing?
could we have been barbing?
could you have been barbing?
could they have been barbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I barb?
couldn't you barb?
couldn't she barb?
couldn't we barb?
couldn't you barb?
couldn't they barb? 	couldn't I be barbing?
couldn't you be barbing?
couldn't she be barbing?
couldn't we be barbing?
couldn't you be barbing?
couldn't they be barbing? 	couldn't I have barbed?
couldn't you have barbed?
couldn't she have barbed?
couldn't we have barbed?
couldn't you have barbed?
couldn't they have barbed? 	couldn't I have been barbing?
couldn't you have been barbing?
couldn't she have been barbing?
couldn't we have been barbing?
couldn't you have been barbing?
couldn't they have been barbing?