English verb conjugation
COULD JET

Regular verb: jet - jetted - jetted

Affirmation

Simple form	V-ing form
I could jet you could jet he could jet we could jet you could jet they could jet	I could be jetting you could be jetting he could be jetting we could be jetting you could be jetting they could be jetting
Perfect	V-ing perfect
I could have jetted you could have jetted he could have jetted we could have jetted you could have jetted they could have jetted	I could have been jetting you could have been jetting he could have been jetting we could have been jetting you could have been jetting they could have been jetting

Negation

Simple form	V-ing form
I couldn't jet you couldn't jet he couldn't jet we couldn't jet you couldn't jet they couldn't jet	I couldn't be jetting you couldn't be jetting he couldn't be jetting we couldn't be jetting you couldn't be jetting they couldn't be jetting
Perfect	V-ing perfect
I couldn't have jetted you couldn't have jetted he couldn't have jetted we couldn't have jetted you couldn't have jetted they couldn't have jetted	I couldn't have been jetting you couldn't have been jetting he couldn't have been jetting we couldn't have been jetting you couldn't have been jetting they couldn't have been jetting

Interrogative form

Simple form	V-ing form
could I jet? could you jet? could he jet? could we jet? could you jet? could they jet?	could I be jetting? could you be jetting? could he be jetting? could we be jetting? could you be jetting? could they be jetting?
Perfect	V-ing perfect
could I have jetted? could you have jetted? could he have jetted? could we have jetted? could you have jetted? could they have jetted?	could I have been jetting? could you have been jetting? could he have been jetting? could we have been jetting? could you have been jetting? could they have been jetting?

Interro-negative form

Simple form	V-ing form
couldn't I jet? couldn't you jet? couldn't he jet? couldn't we jet? couldn't you jet? couldn't they jet?	couldn't I be jetting? couldn't you be jetting? couldn't he be jetting? couldn't we be jetting? couldn't you be jetting? couldn't they be jetting?
Perfect	V-ing perfect
couldn't I have jetted? couldn't you have jetted? couldn't he have jetted? couldn't we have jetted? couldn't you have jetted? couldn't they have jetted?	couldn't I have been jetting? couldn't you have been jetting? couldn't he have been jetting? couldn't we have been jetting? couldn't you have been jetting? couldn't they have been jetting?