I must auction you must auction she must auction we must auction you must auction they must auction
V-ing form
I must be auctioning you must be auctioning she must be auctioning we must be auctioning you must be auctioning they must be auctioning
Perfect
I must have auctioned you must have auctioned she must have auctioned we must have auctioned you must have auctioned they must have auctioned
V-ing perfect
I must have been auctioning you must have been auctioning she must have been auctioning we must have been auctioning you must have been auctioning they must have been auctioning
Negation
Simple form
I must not auction you must not auction she must not auction we must not auction you must not auction they must not auction
V-ing form
I must not be auctioning you must not be auctioning she must not be auctioning we must not be auctioning you must not be auctioning they must not be auctioning
Perfect
I must not have auctioned you must not have auctioned she must not have auctioned we must not have auctioned you must not have auctioned they must not have auctioned
V-ing perfect
I must not have been auctioning you must not have been auctioning she must not have been auctioning we must not have been auctioning you must not have been auctioning they must not have been auctioning
Interrogative form
Simple form
must I auction? must you auction? must she auction? must we auction? must you auction? must they auction?
V-ing form
must I be auctioning? must you be auctioning? must she be auctioning? must we be auctioning? must you be auctioning? must they be auctioning?
Perfect
must I have auctioned? must you have auctioned? must she have auctioned? must we have auctioned? must you have auctioned? must they have auctioned?
V-ing perfect
must I have been auctioning? must you have been auctioning? must she have been auctioning? must we have been auctioning? must you have been auctioning? must they have been auctioning?
Interro-negative form
Simple form
must I not auction? must you not auction? must she not auction? must we not auction? must you not auction? must they not auction?
V-ing form
must I not be auctioning? must you not be auctioning? must she not be auctioning? must we not be auctioning? must you not be auctioning? must they not be auctioning?
Perfect
must I not have auctioned? must you not have auctioned? must she not have auctioned? must we not have auctioned? must you not have auctioned? must they not have auctioned?
V-ing perfect
must I not have been auctioning? must you not have been auctioning? must she not have been auctioning? must we not have been auctioning? must you not have been auctioning? must they not have been auctioning?