could fillet
Regular verb: fillet - filleted- filleted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fillet
you could fillet
he could fillet
we could fillet
you could fillet
they could fillet 	I could be filleting
you could be filleting
he could be filleting
we could be filleting
you could be filleting
they could be filleting	I could have filleted
you could have filleted
he could have filleted
we could have filleted
you could have filleted
they could have filleted	I could have been filleting
you could have been filleting
he could have been filleting
we could have been filleting
you could have been filleting
they could have been filleting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fillet
you couldn't fillet
he couldn't fillet
we couldn't fillet
you couldn't fillet
they couldn't fillet 	I couldn't be filleting
you couldn't be filleting
he couldn't be filleting
we couldn't be filleting
you couldn't be filleting
they couldn't be filleting	I couldn't have filleted
you couldn't have filleted
he couldn't have filleted
we couldn't have filleted
you couldn't have filleted
they couldn't have filleted	I couldn't have been filleting
you couldn't have been filleting
he couldn't have been filleting
we couldn't have been filleting
you couldn't have been filleting
they couldn't have been filleting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fillet?
could you fillet?
could he fillet?
could we fillet?
could you fillet?
could they fillet? 	could I be filleting?
could you be filleting?
could he be filleting?
could we be filleting?
could you be filleting?
could they be filleting? 	could I have filleted?
could you have filleted?
could he have filleted?
could we have filleted?
could you have filleted?
could they have filleted? 	could I have been filleting?
could you have been filleting?
could he have been filleting?
could we have been filleting?
could you have been filleting?
could they have been filleting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fillet?
couldn't you fillet?
couldn't he fillet?
couldn't we fillet?
couldn't you fillet?
couldn't they fillet? 	couldn't I be filleting?
couldn't you be filleting?
couldn't he be filleting?
couldn't we be filleting?
couldn't you be filleting?
couldn't they be filleting? 	couldn't I have filleted?
couldn't you have filleted?
couldn't he have filleted?
couldn't we have filleted?
couldn't you have filleted?
couldn't they have filleted? 	couldn't I have been filleting?
couldn't you have been filleting?
couldn't he have been filleting?
couldn't we have been filleting?
couldn't you have been filleting?
couldn't they have been filleting?