English verb conjugation
COULD FILLAGREE

Regular verb: fillagree - fillagreed - fillagreed

Affirmation

Simple form	V-ing form
I could fillagree you could fillagree he could fillagree we could fillagree you could fillagree they could fillagree	I could be fillagreeing you could be fillagreeing he could be fillagreeing we could be fillagreeing you could be fillagreeing they could be fillagreeing
Perfect	V-ing perfect
I could have fillagreed you could have fillagreed he could have fillagreed we could have fillagreed you could have fillagreed they could have fillagreed	I could have been fillagreeing you could have been fillagreeing he could have been fillagreeing we could have been fillagreeing you could have been fillagreeing they could have been fillagreeing

Negation

Simple form	V-ing form
I couldn't fillagree you couldn't fillagree he couldn't fillagree we couldn't fillagree you couldn't fillagree they couldn't fillagree	I couldn't be fillagreeing you couldn't be fillagreeing he couldn't be fillagreeing we couldn't be fillagreeing you couldn't be fillagreeing they couldn't be fillagreeing
Perfect	V-ing perfect
I couldn't have fillagreed you couldn't have fillagreed he couldn't have fillagreed we couldn't have fillagreed you couldn't have fillagreed they couldn't have fillagreed	I couldn't have been fillagreeing you couldn't have been fillagreeing he couldn't have been fillagreeing we couldn't have been fillagreeing you couldn't have been fillagreeing they couldn't have been fillagreeing

Interrogative form

Simple form	V-ing form
could I fillagree? could you fillagree? could he fillagree? could we fillagree? could you fillagree? could they fillagree?	could I be fillagreeing? could you be fillagreeing? could he be fillagreeing? could we be fillagreeing? could you be fillagreeing? could they be fillagreeing?
Perfect	V-ing perfect
could I have fillagreed? could you have fillagreed? could he have fillagreed? could we have fillagreed? could you have fillagreed? could they have fillagreed?	could I have been fillagreeing? could you have been fillagreeing? could he have been fillagreeing? could we have been fillagreeing? could you have been fillagreeing? could they have been fillagreeing?

Interro-negative form

Simple form	V-ing form
couldn't I fillagree? couldn't you fillagree? couldn't he fillagree? couldn't we fillagree? couldn't you fillagree? couldn't they fillagree?	couldn't I be fillagreeing? couldn't you be fillagreeing? couldn't he be fillagreeing? couldn't we be fillagreeing? couldn't you be fillagreeing? couldn't they be fillagreeing?
Perfect	V-ing perfect
couldn't I have fillagreed? couldn't you have fillagreed? couldn't he have fillagreed? couldn't we have fillagreed? couldn't you have fillagreed? couldn't they have fillagreed?	couldn't I have been fillagreeing? couldn't you have been fillagreeing? couldn't he have been fillagreeing? couldn't we have been fillagreeing? couldn't you have been fillagreeing? couldn't they have been fillagreeing?