English verb conjugation
COULD AUCTION

Regular verb: auction - auctioned - auctioned

Affirmation

Simple form	V-ing form
I could auction you could auction he could auction we could auction you could auction they could auction	I could be auctioning you could be auctioning he could be auctioning we could be auctioning you could be auctioning they could be auctioning
Perfect	V-ing perfect
I could have auctioned you could have auctioned he could have auctioned we could have auctioned you could have auctioned they could have auctioned	I could have been auctioning you could have been auctioning he could have been auctioning we could have been auctioning you could have been auctioning they could have been auctioning

Negation

Simple form	V-ing form
I could not auction you could not auction he could not auction we could not auction you could not auction they could not auction	I could not be auctioning you could not be auctioning he could not be auctioning we could not be auctioning you could not be auctioning they could not be auctioning
Perfect	V-ing perfect
I could not have auctioned you could not have auctioned he could not have auctioned we could not have auctioned you could not have auctioned they could not have auctioned	I could not have been auctioning you could not have been auctioning he could not have been auctioning we could not have been auctioning you could not have been auctioning they could not have been auctioning

Interrogative form

Simple form	V-ing form
could I auction? could you auction? could he auction? could we auction? could you auction? could they auction?	could I be auctioning? could you be auctioning? could he be auctioning? could we be auctioning? could you be auctioning? could they be auctioning?
Perfect	V-ing perfect
could I have auctioned? could you have auctioned? could he have auctioned? could we have auctioned? could you have auctioned? could they have auctioned?	could I have been auctioning? could you have been auctioning? could he have been auctioning? could we have been auctioning? could you have been auctioning? could they have been auctioning?

Interro-negative form

Simple form	V-ing form
could I not auction? could you not auction? could he not auction? could we not auction? could you not auction? could they not auction?	could I not be auctioning? could you not be auctioning? could he not be auctioning? could we not be auctioning? could you not be auctioning? could they not be auctioning?
Perfect	V-ing perfect
could I not have auctioned? could you not have auctioned? could he not have auctioned? could we not have auctioned? could you not have auctioned? could they not have auctioned?	could I not have been auctioning? could you not have been auctioning? could he not have been auctioning? could we not have been auctioning? could you not have been auctioning? could they not have been auctioning?