I can auction you can auction he can auction we can auction you can auction they can auction
V-ing form
I can be auctioning you can be auctioning he can be auctioning we can be auctioning you can be auctioning they can be auctioning
Perfect
I can have auctioned you can have auctioned he can have auctioned we can have auctioned you can have auctioned they can have auctioned
V-ing perfect
I can have been auctioning you can have been auctioning he can have been auctioning we can have been auctioning you can have been auctioning they can have been auctioning
Negation
Simple form
I can't auction you can't auction he can't auction we can't auction you can't auction they can't auction
V-ing form
I can't be auctioning you can't be auctioning he can't be auctioning we can't be auctioning you can't be auctioning they can't be auctioning
Perfect
I can't have auctioned you can't have auctioned he can't have auctioned we can't have auctioned you can't have auctioned they can't have auctioned
V-ing perfect
I can't have been auctioning you can't have been auctioning he can't have been auctioning we can't have been auctioning you can't have been auctioning they can't have been auctioning
Interrogative form
Simple form
can I auction? can you auction? can he auction? can we auction? can you auction? can they auction?
V-ing form
can I be auctioning? can you be auctioning? can he be auctioning? can we be auctioning? can you be auctioning? can they be auctioning?
Perfect
can I have auctioned? can you have auctioned? can he have auctioned? can we have auctioned? can you have auctioned? can they have auctioned?
V-ing perfect
can I have been auctioning? can you have been auctioning? can he have been auctioning? can we have been auctioning? can you have been auctioning? can they have been auctioning?
Interro-negative form
Simple form
can't I auction? can't you auction? can't he auction? can't we auction? can't you auction? can't they auction?
V-ing form
can't I be auctioning? can't you be auctioning? can't he be auctioning? can't we be auctioning? can't you be auctioning? can't they be auctioning?
Perfect
can't I have auctioned? can't you have auctioned? can't he have auctioned? can't we have auctioned? can't you have auctioned? can't they have auctioned?
V-ing perfect
can't I have been auctioning? can't you have been auctioning? can't he have been auctioning? can't we have been auctioning? can't you have been auctioning? can't they have been auctioning?