English verb conjugation
COULD JETTISON

Regular verb: jettison - jettisoned - jettisoned

Affirmation

Simple form	V-ing form
I could jettison you could jettison he could jettison we could jettison you could jettison they could jettison	I could be jettisoning you could be jettisoning he could be jettisoning we could be jettisoning you could be jettisoning they could be jettisoning
Perfect	V-ing perfect
I could have jettisoned you could have jettisoned he could have jettisoned we could have jettisoned you could have jettisoned they could have jettisoned	I could have been jettisoning you could have been jettisoning he could have been jettisoning we could have been jettisoning you could have been jettisoning they could have been jettisoning

Negation

Simple form	V-ing form
I couldn't jettison you couldn't jettison he couldn't jettison we couldn't jettison you couldn't jettison they couldn't jettison	I couldn't be jettisoning you couldn't be jettisoning he couldn't be jettisoning we couldn't be jettisoning you couldn't be jettisoning they couldn't be jettisoning
Perfect	V-ing perfect
I couldn't have jettisoned you couldn't have jettisoned he couldn't have jettisoned we couldn't have jettisoned you couldn't have jettisoned they couldn't have jettisoned	I couldn't have been jettisoning you couldn't have been jettisoning he couldn't have been jettisoning we couldn't have been jettisoning you couldn't have been jettisoning they couldn't have been jettisoning

Interrogative form

Simple form	V-ing form
could I jettison? could you jettison? could he jettison? could we jettison? could you jettison? could they jettison?	could I be jettisoning? could you be jettisoning? could he be jettisoning? could we be jettisoning? could you be jettisoning? could they be jettisoning?
Perfect	V-ing perfect
could I have jettisoned? could you have jettisoned? could he have jettisoned? could we have jettisoned? could you have jettisoned? could they have jettisoned?	could I have been jettisoning? could you have been jettisoning? could he have been jettisoning? could we have been jettisoning? could you have been jettisoning? could they have been jettisoning?

Interro-negative form

Simple form	V-ing form
couldn't I jettison? couldn't you jettison? couldn't he jettison? couldn't we jettison? couldn't you jettison? couldn't they jettison?	couldn't I be jettisoning? couldn't you be jettisoning? couldn't he be jettisoning? couldn't we be jettisoning? couldn't you be jettisoning? couldn't they be jettisoning?
Perfect	V-ing perfect
couldn't I have jettisoned? couldn't you have jettisoned? couldn't he have jettisoned? couldn't we have jettisoned? couldn't you have jettisoned? couldn't they have jettisoned?	couldn't I have been jettisoning? couldn't you have been jettisoning? couldn't he have been jettisoning? couldn't we have been jettisoning? couldn't you have been jettisoning? couldn't they have been jettisoning?