English verb conjugation
COULD PHILTER

Regular verb: philter - philtered - philtered

Affirmation

Simple form	V-ing form
I could philter you could philter he could philter we could philter you could philter they could philter	I could be philtering you could be philtering he could be philtering we could be philtering you could be philtering they could be philtering
Perfect	V-ing perfect
I could have philtered you could have philtered he could have philtered we could have philtered you could have philtered they could have philtered	I could have been philtering you could have been philtering he could have been philtering we could have been philtering you could have been philtering they could have been philtering

Negation

Simple form	V-ing form
I could not philter you could not philter he could not philter we could not philter you could not philter they could not philter	I could not be philtering you could not be philtering he could not be philtering we could not be philtering you could not be philtering they could not be philtering
Perfect	V-ing perfect
I could not have philtered you could not have philtered he could not have philtered we could not have philtered you could not have philtered they could not have philtered	I could not have been philtering you could not have been philtering he could not have been philtering we could not have been philtering you could not have been philtering they could not have been philtering

Interrogative form

Simple form	V-ing form
could I philter? could you philter? could he philter? could we philter? could you philter? could they philter?	could I be philtering? could you be philtering? could he be philtering? could we be philtering? could you be philtering? could they be philtering?
Perfect	V-ing perfect
could I have philtered? could you have philtered? could he have philtered? could we have philtered? could you have philtered? could they have philtered?	could I have been philtering? could you have been philtering? could he have been philtering? could we have been philtering? could you have been philtering? could they have been philtering?

Interro-negative form

Simple form	V-ing form
could I not philter? could you not philter? could he not philter? could we not philter? could you not philter? could they not philter?	could I not be philtering? could you not be philtering? could he not be philtering? could we not be philtering? could you not be philtering? could they not be philtering?
Perfect	V-ing perfect
could I not have philtered? could you not have philtered? could he not have philtered? could we not have philtered? could you not have philtered? could they not have philtered?	could I not have been philtering? could you not have been philtering? could he not have been philtering? could we not have been philtering? could you not have been philtering? could they not have been philtering?