could outburn
Regular verb: outburn - outburned- outburned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could outburn
you could outburn
he could outburn
we could outburn
you could outburn
they could outburn 	I could be outburning
you could be outburning
he could be outburning
we could be outburning
you could be outburning
they could be outburning	I could have outburned
you could have outburned
he could have outburned
we could have outburned
you could have outburned
they could have outburned	I could have been outburning
you could have been outburning
he could have been outburning
we could have been outburning
you could have been outburning
they could have been outburning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't outburn
you couldn't outburn
he couldn't outburn
we couldn't outburn
you couldn't outburn
they couldn't outburn 	I couldn't be outburning
you couldn't be outburning
he couldn't be outburning
we couldn't be outburning
you couldn't be outburning
they couldn't be outburning	I couldn't have outburned
you couldn't have outburned
he couldn't have outburned
we couldn't have outburned
you couldn't have outburned
they couldn't have outburned	I couldn't have been outburning
you couldn't have been outburning
he couldn't have been outburning
we couldn't have been outburning
you couldn't have been outburning
they couldn't have been outburning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I outburn?
could you outburn?
could he outburn?
could we outburn?
could you outburn?
could they outburn? 	could I be outburning?
could you be outburning?
could he be outburning?
could we be outburning?
could you be outburning?
could they be outburning? 	could I have outburned?
could you have outburned?
could he have outburned?
could we have outburned?
could you have outburned?
could they have outburned? 	could I have been outburning?
could you have been outburning?
could he have been outburning?
could we have been outburning?
could you have been outburning?
could they have been outburning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I outburn?
couldn't you outburn?
couldn't he outburn?
couldn't we outburn?
couldn't you outburn?
couldn't they outburn? 	couldn't I be outburning?
couldn't you be outburning?
couldn't he be outburning?
couldn't we be outburning?
couldn't you be outburning?
couldn't they be outburning? 	couldn't I have outburned?
couldn't you have outburned?
couldn't he have outburned?
couldn't we have outburned?
couldn't you have outburned?
couldn't they have outburned? 	couldn't I have been outburning?
couldn't you have been outburning?
couldn't he have been outburning?
couldn't we have been outburning?
couldn't you have been outburning?
couldn't they have been outburning?