English verb conjugation
COULD OUTBURN

Regular verb: outburn - outburned - outburned

Affirmation

Simple form	V-ing form
I could outburn you could outburn he could outburn we could outburn you could outburn they could outburn	I could be outburning you could be outburning he could be outburning we could be outburning you could be outburning they could be outburning
Perfect	V-ing perfect
I could have outburned you could have outburned he could have outburned we could have outburned you could have outburned they could have outburned	I could have been outburning you could have been outburning he could have been outburning we could have been outburning you could have been outburning they could have been outburning

Negation

Simple form	V-ing form
I could not outburn you could not outburn he could not outburn we could not outburn you could not outburn they could not outburn	I could not be outburning you could not be outburning he could not be outburning we could not be outburning you could not be outburning they could not be outburning
Perfect	V-ing perfect
I could not have outburned you could not have outburned he could not have outburned we could not have outburned you could not have outburned they could not have outburned	I could not have been outburning you could not have been outburning he could not have been outburning we could not have been outburning you could not have been outburning they could not have been outburning

Interrogative form

Simple form	V-ing form
could I outburn? could you outburn? could he outburn? could we outburn? could you outburn? could they outburn?	could I be outburning? could you be outburning? could he be outburning? could we be outburning? could you be outburning? could they be outburning?
Perfect	V-ing perfect
could I have outburned? could you have outburned? could he have outburned? could we have outburned? could you have outburned? could they have outburned?	could I have been outburning? could you have been outburning? could he have been outburning? could we have been outburning? could you have been outburning? could they have been outburning?

Interro-negative form

Simple form	V-ing form
could I not outburn? could you not outburn? could he not outburn? could we not outburn? could you not outburn? could they not outburn?	could I not be outburning? could you not be outburning? could he not be outburning? could we not be outburning? could you not be outburning? could they not be outburning?
Perfect	V-ing perfect
could I not have outburned? could you not have outburned? could he not have outburned? could we not have outburned? could you not have outburned? could they not have outburned?	could I not have been outburning? could you not have been outburning? could he not have been outburning? could we not have been outburning? could you not have been outburning? could they not have been outburning?