English verb conjugation
COULD MOUSETRAP

Regular verb: mousetrap - mousetraped - mousetraped

Affirmation

Simple form	V-ing form
I could mousetrap you could mousetrap he could mousetrap we could mousetrap you could mousetrap they could mousetrap	I could be mousetraping you could be mousetraping he could be mousetraping we could be mousetraping you could be mousetraping they could be mousetraping
Perfect	V-ing perfect
I could have mousetraped you could have mousetraped he could have mousetraped we could have mousetraped you could have mousetraped they could have mousetraped	I could have been mousetraping you could have been mousetraping he could have been mousetraping we could have been mousetraping you could have been mousetraping they could have been mousetraping

Negation

Simple form	V-ing form
I could not mousetrap you could not mousetrap he could not mousetrap we could not mousetrap you could not mousetrap they could not mousetrap	I could not be mousetraping you could not be mousetraping he could not be mousetraping we could not be mousetraping you could not be mousetraping they could not be mousetraping
Perfect	V-ing perfect
I could not have mousetraped you could not have mousetraped he could not have mousetraped we could not have mousetraped you could not have mousetraped they could not have mousetraped	I could not have been mousetraping you could not have been mousetraping he could not have been mousetraping we could not have been mousetraping you could not have been mousetraping they could not have been mousetraping

Interrogative form

Simple form	V-ing form
could I mousetrap? could you mousetrap? could he mousetrap? could we mousetrap? could you mousetrap? could they mousetrap?	could I be mousetraping? could you be mousetraping? could he be mousetraping? could we be mousetraping? could you be mousetraping? could they be mousetraping?
Perfect	V-ing perfect
could I have mousetraped? could you have mousetraped? could he have mousetraped? could we have mousetraped? could you have mousetraped? could they have mousetraped?	could I have been mousetraping? could you have been mousetraping? could he have been mousetraping? could we have been mousetraping? could you have been mousetraping? could they have been mousetraping?

Interro-negative form

Simple form	V-ing form
could I not mousetrap? could you not mousetrap? could he not mousetrap? could we not mousetrap? could you not mousetrap? could they not mousetrap?	could I not be mousetraping? could you not be mousetraping? could he not be mousetraping? could we not be mousetraping? could you not be mousetraping? could they not be mousetraping?
Perfect	V-ing perfect
could I not have mousetraped? could you not have mousetraped? could he not have mousetraped? could we not have mousetraped? could you not have mousetraped? could they not have mousetraped?	could I not have been mousetraping? could you not have been mousetraping? could he not have been mousetraping? could we not have been mousetraping? could you not have been mousetraping? could they not have been mousetraping?