English verb conjugation
COULD OUTTHIEVE

Regular verb: outthieve - outthieved - outthieved

Affirmation

Simple form	V-ing form
I could outthieve you could outthieve she could outthieve we could outthieve you could outthieve they could outthieve	I could be outthieving you could be outthieving she could be outthieving we could be outthieving you could be outthieving they could be outthieving
Perfect	V-ing perfect
I could have outthieved you could have outthieved she could have outthieved we could have outthieved you could have outthieved they could have outthieved	I could have been outthieving you could have been outthieving she could have been outthieving we could have been outthieving you could have been outthieving they could have been outthieving

Negation

Simple form	V-ing form
I could not outthieve you could not outthieve she could not outthieve we could not outthieve you could not outthieve they could not outthieve	I could not be outthieving you could not be outthieving she could not be outthieving we could not be outthieving you could not be outthieving they could not be outthieving
Perfect	V-ing perfect
I could not have outthieved you could not have outthieved she could not have outthieved we could not have outthieved you could not have outthieved they could not have outthieved	I could not have been outthieving you could not have been outthieving she could not have been outthieving we could not have been outthieving you could not have been outthieving they could not have been outthieving

Interrogative form

Simple form	V-ing form
could I outthieve? could you outthieve? could she outthieve? could we outthieve? could you outthieve? could they outthieve?	could I be outthieving? could you be outthieving? could she be outthieving? could we be outthieving? could you be outthieving? could they be outthieving?
Perfect	V-ing perfect
could I have outthieved? could you have outthieved? could she have outthieved? could we have outthieved? could you have outthieved? could they have outthieved?	could I have been outthieving? could you have been outthieving? could she have been outthieving? could we have been outthieving? could you have been outthieving? could they have been outthieving?

Interro-negative form

Simple form	V-ing form
could I not outthieve? could you not outthieve? could she not outthieve? could we not outthieve? could you not outthieve? could they not outthieve?	could I not be outthieving? could you not be outthieving? could she not be outthieving? could we not be outthieving? could you not be outthieving? could they not be outthieving?
Perfect	V-ing perfect
could I not have outthieved? could you not have outthieved? could she not have outthieved? could we not have outthieved? could you not have outthieved? could they not have outthieved?	could I not have been outthieving? could you not have been outthieving? could she not have been outthieving? could we not have been outthieving? could you not have been outthieving? could they not have been outthieving?