could bolt
Regular verb: bolt - bolted- bolted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bolt
you could bolt
he could bolt
we could bolt
you could bolt
they could bolt 	I could be bolting
you could be bolting
he could be bolting
we could be bolting
you could be bolting
they could be bolting	I could have bolted
you could have bolted
he could have bolted
we could have bolted
you could have bolted
they could have bolted	I could have been bolting
you could have been bolting
he could have been bolting
we could have been bolting
you could have been bolting
they could have been bolting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bolt
you couldn't bolt
he couldn't bolt
we couldn't bolt
you couldn't bolt
they couldn't bolt 	I couldn't be bolting
you couldn't be bolting
he couldn't be bolting
we couldn't be bolting
you couldn't be bolting
they couldn't be bolting	I couldn't have bolted
you couldn't have bolted
he couldn't have bolted
we couldn't have bolted
you couldn't have bolted
they couldn't have bolted	I couldn't have been bolting
you couldn't have been bolting
he couldn't have been bolting
we couldn't have been bolting
you couldn't have been bolting
they couldn't have been bolting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bolt?
could you bolt?
could he bolt?
could we bolt?
could you bolt?
could they bolt? 	could I be bolting?
could you be bolting?
could he be bolting?
could we be bolting?
could you be bolting?
could they be bolting? 	could I have bolted?
could you have bolted?
could he have bolted?
could we have bolted?
could you have bolted?
could they have bolted? 	could I have been bolting?
could you have been bolting?
could he have been bolting?
could we have been bolting?
could you have been bolting?
could they have been bolting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bolt?
couldn't you bolt?
couldn't he bolt?
couldn't we bolt?
couldn't you bolt?
couldn't they bolt? 	couldn't I be bolting?
couldn't you be bolting?
couldn't he be bolting?
couldn't we be bolting?
couldn't you be bolting?
couldn't they be bolting? 	couldn't I have bolted?
couldn't you have bolted?
couldn't he have bolted?
couldn't we have bolted?
couldn't you have bolted?
couldn't they have bolted? 	couldn't I have been bolting?
couldn't you have been bolting?
couldn't he have been bolting?
couldn't we have been bolting?
couldn't you have been bolting?
couldn't they have been bolting?