English verb conjugation
COULD SPONGE

Regular verb: sponge - sponged - sponged

Affirmation

Simple form	V-ing form
I could sponge you could sponge he could sponge we could sponge you could sponge they could sponge	I could be sponging you could be sponging he could be sponging we could be sponging you could be sponging they could be sponging
Perfect	V-ing perfect
I could have sponged you could have sponged he could have sponged we could have sponged you could have sponged they could have sponged	I could have been sponging you could have been sponging he could have been sponging we could have been sponging you could have been sponging they could have been sponging

Negation

Simple form	V-ing form
I could not sponge you could not sponge he could not sponge we could not sponge you could not sponge they could not sponge	I could not be sponging you could not be sponging he could not be sponging we could not be sponging you could not be sponging they could not be sponging
Perfect	V-ing perfect
I could not have sponged you could not have sponged he could not have sponged we could not have sponged you could not have sponged they could not have sponged	I could not have been sponging you could not have been sponging he could not have been sponging we could not have been sponging you could not have been sponging they could not have been sponging

Interrogative form

Simple form	V-ing form
could I sponge? could you sponge? could he sponge? could we sponge? could you sponge? could they sponge?	could I be sponging? could you be sponging? could he be sponging? could we be sponging? could you be sponging? could they be sponging?
Perfect	V-ing perfect
could I have sponged? could you have sponged? could he have sponged? could we have sponged? could you have sponged? could they have sponged?	could I have been sponging? could you have been sponging? could he have been sponging? could we have been sponging? could you have been sponging? could they have been sponging?

Interro-negative form

Simple form	V-ing form
could I not sponge? could you not sponge? could he not sponge? could we not sponge? could you not sponge? could they not sponge?	could I not be sponging? could you not be sponging? could he not be sponging? could we not be sponging? could you not be sponging? could they not be sponging?
Perfect	V-ing perfect
could I not have sponged? could you not have sponged? could he not have sponged? could we not have sponged? could you not have sponged? could they not have sponged?	could I not have been sponging? could you not have been sponging? could he not have been sponging? could we not have been sponging? could you not have been sponging? could they not have been sponging?