could bugle
Regular verb: bugle - bugled- bugled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bugle
you could bugle
he could bugle
we could bugle
you could bugle
they could bugle 	I could be bugling
you could be bugling
he could be bugling
we could be bugling
you could be bugling
they could be bugling	I could have bugled
you could have bugled
he could have bugled
we could have bugled
you could have bugled
they could have bugled	I could have been bugling
you could have been bugling
he could have been bugling
we could have been bugling
you could have been bugling
they could have been bugling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not bugle
you could not bugle
he could not bugle
we could not bugle
you could not bugle
they could not bugle 	I could not be bugling
you could not be bugling
he could not be bugling
we could not be bugling
you could not be bugling
they could not be bugling	I could not have bugled
you could not have bugled
he could not have bugled
we could not have bugled
you could not have bugled
they could not have bugled	I could not have been bugling
you could not have been bugling
he could not have been bugling
we could not have been bugling
you could not have been bugling
they could not have been bugling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bugle?
could you bugle?
could he bugle?
could we bugle?
could you bugle?
could they bugle? 	could I be bugling?
could you be bugling?
could he be bugling?
could we be bugling?
could you be bugling?
could they be bugling? 	could I have bugled?
could you have bugled?
could he have bugled?
could we have bugled?
could you have bugled?
could they have bugled? 	could I have been bugling?
could you have been bugling?
could he have been bugling?
could we have been bugling?
could you have been bugling?
could they have been bugling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not bugle?
could you not bugle?
could he not bugle?
could we not bugle?
could you not bugle?
could they not bugle? 	could I not be bugling?
could you not be bugling?
could he not be bugling?
could we not be bugling?
could you not be bugling?
could they not be bugling? 	could I not have bugled?
could you not have bugled?
could he not have bugled?
could we not have bugled?
could you not have bugled?
could they not have bugled? 	could I not have been bugling?
could you not have been bugling?
could he not have been bugling?
could we not have been bugling?
could you not have been bugling?
could they not have been bugling?