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 couldn't grapple you couldn't grapple he couldn't grapple we couldn't grapple you couldn't grapple they couldn't grapple	I couldn't be grappling you couldn't be grappling he couldn't be grappling we couldn't be grappling you couldn't be grappling they couldn't be grappling
Perfect	V-ing perfect
I couldn't have grappled you couldn't have grappled he couldn't have grappled we couldn't have grappled you couldn't have grappled they couldn't have grappled	I couldn't have been grappling you couldn't have been grappling he couldn't have been grappling we couldn't have been grappling you couldn't have been grappling they couldn't 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
couldn't I grapple? couldn't you grapple? couldn't he grapple? couldn't we grapple? couldn't you grapple? couldn't they grapple?	couldn't I be grappling? couldn't you be grappling? couldn't he be grappling? couldn't we be grappling? couldn't you be grappling? couldn't they be grappling?
Perfect	V-ing perfect
couldn't I have grappled? couldn't you have grappled? couldn't he have grappled? couldn't we have grappled? couldn't you have grappled? couldn't they have grappled?	couldn't I have been grappling? couldn't you have been grappling? couldn't he have been grappling? couldn't we have been grappling? couldn't you have been grappling? couldn't they have been grappling?