could barbecue
Regular verb: barbecue - barbecued- barbecued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could barbecue
you could barbecue
he could barbecue
we could barbecue
you could barbecue
they could barbecue 	I could be barbecuing
you could be barbecuing
he could be barbecuing
we could be barbecuing
you could be barbecuing
they could be barbecuing	I could have barbecued
you could have barbecued
he could have barbecued
we could have barbecued
you could have barbecued
they could have barbecued	I could have been barbecuing
you could have been barbecuing
he could have been barbecuing
we could have been barbecuing
you could have been barbecuing
they could have been barbecuing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't barbecue
you couldn't barbecue
he couldn't barbecue
we couldn't barbecue
you couldn't barbecue
they couldn't barbecue 	I couldn't be barbecuing
you couldn't be barbecuing
he couldn't be barbecuing
we couldn't be barbecuing
you couldn't be barbecuing
they couldn't be barbecuing	I couldn't have barbecued
you couldn't have barbecued
he couldn't have barbecued
we couldn't have barbecued
you couldn't have barbecued
they couldn't have barbecued	I couldn't have been barbecuing
you couldn't have been barbecuing
he couldn't have been barbecuing
we couldn't have been barbecuing
you couldn't have been barbecuing
they couldn't have been barbecuing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I barbecue?
could you barbecue?
could he barbecue?
could we barbecue?
could you barbecue?
could they barbecue? 	could I be barbecuing?
could you be barbecuing?
could he be barbecuing?
could we be barbecuing?
could you be barbecuing?
could they be barbecuing? 	could I have barbecued?
could you have barbecued?
could he have barbecued?
could we have barbecued?
could you have barbecued?
could they have barbecued? 	could I have been barbecuing?
could you have been barbecuing?
could he have been barbecuing?
could we have been barbecuing?
could you have been barbecuing?
could they have been barbecuing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I barbecue?
couldn't you barbecue?
couldn't he barbecue?
couldn't we barbecue?
couldn't you barbecue?
couldn't they barbecue? 	couldn't I be barbecuing?
couldn't you be barbecuing?
couldn't he be barbecuing?
couldn't we be barbecuing?
couldn't you be barbecuing?
couldn't they be barbecuing? 	couldn't I have barbecued?
couldn't you have barbecued?
couldn't he have barbecued?
couldn't we have barbecued?
couldn't you have barbecued?
couldn't they have barbecued? 	couldn't I have been barbecuing?
couldn't you have been barbecuing?
couldn't he have been barbecuing?
couldn't we have been barbecuing?
couldn't you have been barbecuing?
couldn't they have been barbecuing?