I could outbid you could outbid he could outbid we could outbid you could outbid they could outbid
V-ing form
I could be outbidding you could be outbidding he could be outbidding we could be outbidding you could be outbidding they could be outbidding
Perfect
I could have outbid you could have outbid he could have outbid we could have outbid you could have outbid they could have outbid
V-ing perfect
I could have been outbidding you could have been outbidding he could have been outbidding we could have been outbidding you could have been outbidding they could have been outbidding
Negation
Simple form
I could not outbid you could not outbid he could not outbid we could not outbid you could not outbid they could not outbid
V-ing form
I could not be outbidding you could not be outbidding he could not be outbidding we could not be outbidding you could not be outbidding they could not be outbidding
Perfect
I could not have outbid you could not have outbid he could not have outbid we could not have outbid you could not have outbid they could not have outbid
V-ing perfect
I could not have been outbidding you could not have been outbidding he could not have been outbidding we could not have been outbidding you could not have been outbidding they could not have been outbidding
Interrogative form
Simple form
could I outbid? could you outbid? could he outbid? could we outbid? could you outbid? could they outbid?
V-ing form
could I be outbidding? could you be outbidding? could he be outbidding? could we be outbidding? could you be outbidding? could they be outbidding?
Perfect
could I have outbid? could you have outbid? could he have outbid? could we have outbid? could you have outbid? could they have outbid?
V-ing perfect
could I have been outbidding? could you have been outbidding? could he have been outbidding? could we have been outbidding? could you have been outbidding? could they have been outbidding?
Interro-negative form
Simple form
could I not outbid? could you not outbid? could he not outbid? could we not outbid? could you not outbid? could they not outbid?
V-ing form
could I not be outbidding? could you not be outbidding? could he not be outbidding? could we not be outbidding? could you not be outbidding? could they not be outbidding?
Perfect
could I not have outbid? could you not have outbid? could he not have outbid? could we not have outbid? could you not have outbid? could they not have outbid?
V-ing perfect
could I not have been outbidding? could you not have been outbidding? could he not have been outbidding? could we not have been outbidding? could you not have been outbidding? could they not have been outbidding?