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 couldn't philter you couldn't philter he couldn't philter we couldn't philter you couldn't philter they couldn't philter	I couldn't be philtering you couldn't be philtering he couldn't be philtering we couldn't be philtering you couldn't be philtering they couldn't be philtering
Perfect	V-ing perfect
I couldn't have philtered you couldn't have philtered he couldn't have philtered we couldn't have philtered you couldn't have philtered they couldn't have philtered	I couldn't have been philtering you couldn't have been philtering he couldn't have been philtering we couldn't have been philtering you couldn't have been philtering they couldn't 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
couldn't I philter? couldn't you philter? couldn't he philter? couldn't we philter? couldn't you philter? couldn't they philter?	couldn't I be philtering? couldn't you be philtering? couldn't he be philtering? couldn't we be philtering? couldn't you be philtering? couldn't they be philtering?
Perfect	V-ing perfect
couldn't I have philtered? couldn't you have philtered? couldn't he have philtered? couldn't we have philtered? couldn't you have philtered? couldn't they have philtered?	couldn't I have been philtering? couldn't you have been philtering? couldn't he have been philtering? couldn't we have been philtering? couldn't you have been philtering? couldn't they have been philtering?