English verb conjugation
COULD AIRLIFT

Regular verb: airlift - airlifted - airlifted

Affirmation

Simple form	V-ing form
I could airlift you could airlift he could airlift we could airlift you could airlift they could airlift	I could be airlifting you could be airlifting he could be airlifting we could be airlifting you could be airlifting they could be airlifting
Perfect	V-ing perfect
I could have airlifted you could have airlifted he could have airlifted we could have airlifted you could have airlifted they could have airlifted	I could have been airlifting you could have been airlifting he could have been airlifting we could have been airlifting you could have been airlifting they could have been airlifting

Negation

Simple form	V-ing form
I could not airlift you could not airlift he could not airlift we could not airlift you could not airlift they could not airlift	I could not be airlifting you could not be airlifting he could not be airlifting we could not be airlifting you could not be airlifting they could not be airlifting
Perfect	V-ing perfect
I could not have airlifted you could not have airlifted he could not have airlifted we could not have airlifted you could not have airlifted they could not have airlifted	I could not have been airlifting you could not have been airlifting he could not have been airlifting we could not have been airlifting you could not have been airlifting they could not have been airlifting

Interrogative form

Simple form	V-ing form
could I airlift? could you airlift? could he airlift? could we airlift? could you airlift? could they airlift?	could I be airlifting? could you be airlifting? could he be airlifting? could we be airlifting? could you be airlifting? could they be airlifting?
Perfect	V-ing perfect
could I have airlifted? could you have airlifted? could he have airlifted? could we have airlifted? could you have airlifted? could they have airlifted?	could I have been airlifting? could you have been airlifting? could he have been airlifting? could we have been airlifting? could you have been airlifting? could they have been airlifting?

Interro-negative form

Simple form	V-ing form
could I not airlift? could you not airlift? could he not airlift? could we not airlift? could you not airlift? could they not airlift?	could I not be airlifting? could you not be airlifting? could he not be airlifting? could we not be airlifting? could you not be airlifting? could they not be airlifting?
Perfect	V-ing perfect
could I not have airlifted? could you not have airlifted? could he not have airlifted? could we not have airlifted? could you not have airlifted? could they not have airlifted?	could I not have been airlifting? could you not have been airlifting? could he not have been airlifting? could we not have been airlifting? could you not have been airlifting? could they not have been airlifting?