English verb conjugation
COULD GRAPPLE

Regular verb: grapple - grappled - grappled

Affirmation

Simple form	V-ing form
I could grapple you could grapple he could grapple we could grapple you could grapple they could grapple	I could be grappling you could be grappling he could be grappling we could be grappling you could be grappling they could be grappling
Perfect	V-ing perfect
I could have grappled you could have grappled he could have grappled we could have grappled you could have grappled they could have grappled	I could have been grappling you could have been grappling he could have been grappling we could have been grappling you could have been grappling they could have been grappling

Negation

Simple form	V-ing form
I could not grapple you could not grapple he could not grapple we could not grapple you could not grapple they could not grapple	I could not be grappling you could not be grappling he could not be grappling we could not be grappling you could not be grappling they could not be grappling
Perfect	V-ing perfect
I could not have grappled you could not have grappled he could not have grappled we could not have grappled you could not have grappled they could not have grappled	I could not have been grappling you could not have been grappling he could not have been grappling we could not have been grappling you could not have been grappling they could not have been grappling

Interrogative form

Simple form	V-ing form
could I grapple? could you grapple? could he grapple? could we grapple? could you grapple? could they grapple?	could I be grappling? could you be grappling? could he be grappling? could we be grappling? could you be grappling? could they be grappling?
Perfect	V-ing perfect
could I have grappled? could you have grappled? could he have grappled? could we have grappled? could you have grappled? could they have grappled?	could I have been grappling? could you have been grappling? could he have been grappling? could we have been grappling? could you have been grappling? could they have been grappling?

Interro-negative form

Simple form	V-ing form
could I not grapple? could you not grapple? could he not grapple? could we not grapple? could you not grapple? could they not grapple?	could I not be grappling? could you not be grappling? could he not be grappling? could we not be grappling? could you not be grappling? could they not be grappling?
Perfect	V-ing perfect
could I not have grappled? could you not have grappled? could he not have grappled? could we not have grappled? could you not have grappled? could they not have grappled?	could I not have been grappling? could you not have been grappling? could he not have been grappling? could we not have been grappling? could you not have been grappling? could they not have been grappling?