could fillip
Regular verb: fillip - filliped- filliped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fillip
you could fillip
he could fillip
we could fillip
you could fillip
they could fillip 	I could be filliping
you could be filliping
he could be filliping
we could be filliping
you could be filliping
they could be filliping	I could have filliped
you could have filliped
he could have filliped
we could have filliped
you could have filliped
they could have filliped	I could have been filliping
you could have been filliping
he could have been filliping
we could have been filliping
you could have been filliping
they could have been filliping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fillip
you couldn't fillip
he couldn't fillip
we couldn't fillip
you couldn't fillip
they couldn't fillip 	I couldn't be filliping
you couldn't be filliping
he couldn't be filliping
we couldn't be filliping
you couldn't be filliping
they couldn't be filliping	I couldn't have filliped
you couldn't have filliped
he couldn't have filliped
we couldn't have filliped
you couldn't have filliped
they couldn't have filliped	I couldn't have been filliping
you couldn't have been filliping
he couldn't have been filliping
we couldn't have been filliping
you couldn't have been filliping
they couldn't have been filliping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fillip?
could you fillip?
could he fillip?
could we fillip?
could you fillip?
could they fillip? 	could I be filliping?
could you be filliping?
could he be filliping?
could we be filliping?
could you be filliping?
could they be filliping? 	could I have filliped?
could you have filliped?
could he have filliped?
could we have filliped?
could you have filliped?
could they have filliped? 	could I have been filliping?
could you have been filliping?
could he have been filliping?
could we have been filliping?
could you have been filliping?
could they have been filliping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fillip?
couldn't you fillip?
couldn't he fillip?
couldn't we fillip?
couldn't you fillip?
couldn't they fillip? 	couldn't I be filliping?
couldn't you be filliping?
couldn't he be filliping?
couldn't we be filliping?
couldn't you be filliping?
couldn't they be filliping? 	couldn't I have filliped?
couldn't you have filliped?
couldn't he have filliped?
couldn't we have filliped?
couldn't you have filliped?
couldn't they have filliped? 	couldn't I have been filliping?
couldn't you have been filliping?
couldn't he have been filliping?
couldn't we have been filliping?
couldn't you have been filliping?
couldn't they have been filliping?