I must disconfirm you must disconfirm he must disconfirm we must disconfirm you must disconfirm they must disconfirm
V-ing form
I must be disconfirming you must be disconfirming he must be disconfirming we must be disconfirming you must be disconfirming they must be disconfirming
Perfect
I must have disconfirmed you must have disconfirmed he must have disconfirmed we must have disconfirmed you must have disconfirmed they must have disconfirmed
V-ing perfect
I must have been disconfirming you must have been disconfirming he must have been disconfirming we must have been disconfirming you must have been disconfirming they must have been disconfirming
Negation
Simple form
I must not disconfirm you must not disconfirm he must not disconfirm we must not disconfirm you must not disconfirm they must not disconfirm
V-ing form
I must not be disconfirming you must not be disconfirming he must not be disconfirming we must not be disconfirming you must not be disconfirming they must not be disconfirming
Perfect
I must not have disconfirmed you must not have disconfirmed he must not have disconfirmed we must not have disconfirmed you must not have disconfirmed they must not have disconfirmed
V-ing perfect
I must not have been disconfirming you must not have been disconfirming he must not have been disconfirming we must not have been disconfirming you must not have been disconfirming they must not have been disconfirming
Interrogative form
Simple form
must I disconfirm? must you disconfirm? must he disconfirm? must we disconfirm? must you disconfirm? must they disconfirm?
V-ing form
must I be disconfirming? must you be disconfirming? must he be disconfirming? must we be disconfirming? must you be disconfirming? must they be disconfirming?
Perfect
must I have disconfirmed? must you have disconfirmed? must he have disconfirmed? must we have disconfirmed? must you have disconfirmed? must they have disconfirmed?
V-ing perfect
must I have been disconfirming? must you have been disconfirming? must he have been disconfirming? must we have been disconfirming? must you have been disconfirming? must they have been disconfirming?
Interro-negative form
Simple form
must I not disconfirm? must you not disconfirm? must he not disconfirm? must we not disconfirm? must you not disconfirm? must they not disconfirm?
V-ing form
must I not be disconfirming? must you not be disconfirming? must he not be disconfirming? must we not be disconfirming? must you not be disconfirming? must they not be disconfirming?
Perfect
must I not have disconfirmed? must you not have disconfirmed? must he not have disconfirmed? must we not have disconfirmed? must you not have disconfirmed? must they not have disconfirmed?
V-ing perfect
must I not have been disconfirming? must you not have been disconfirming? must he not have been disconfirming? must we not have been disconfirming? must you not have been disconfirming? must they not have been disconfirming?