English verb conjugation
MUST DISCARD

Regular verb: discard - discarded - discarded

Affirmation

Simple form	V-ing form
I must discard you must discard he must discard we must discard you must discard they must discard	I must be discarding you must be discarding he must be discarding we must be discarding you must be discarding they must be discarding
Perfect	V-ing perfect
I must have discarded you must have discarded he must have discarded we must have discarded you must have discarded they must have discarded	I must have been discarding you must have been discarding he must have been discarding we must have been discarding you must have been discarding they must have been discarding

Negation

Simple form	V-ing form
I mustn't discard you mustn't discard he mustn't discard we mustn't discard you mustn't discard they mustn't discard	I mustn't be discarding you mustn't be discarding he mustn't be discarding we mustn't be discarding you mustn't be discarding they mustn't be discarding
Perfect	V-ing perfect
I mustn't have discarded you mustn't have discarded he mustn't have discarded we mustn't have discarded you mustn't have discarded they mustn't have discarded	I mustn't have been discarding you mustn't have been discarding he mustn't have been discarding we mustn't have been discarding you mustn't have been discarding they mustn't have been discarding

Interrogative form

Simple form	V-ing form
must I discard? must you discard? must he discard? must we discard? must you discard? must they discard?	must I be discarding? must you be discarding? must he be discarding? must we be discarding? must you be discarding? must they be discarding?
Perfect	V-ing perfect
must I have discarded? must you have discarded? must he have discarded? must we have discarded? must you have discarded? must they have discarded?	must I have been discarding? must you have been discarding? must he have been discarding? must we have been discarding? must you have been discarding? must they have been discarding?

Interro-negative form

Simple form	V-ing form
mustn't I discard? mustn't you discard? mustn't he discard? mustn't we discard? mustn't you discard? mustn't they discard?	mustn't I be discarding? mustn't you be discarding? mustn't he be discarding? mustn't we be discarding? mustn't you be discarding? mustn't they be discarding?
Perfect	V-ing perfect
mustn't I have discarded? mustn't you have discarded? mustn't he have discarded? mustn't we have discarded? mustn't you have discarded? mustn't they have discarded?	mustn't I have been discarding? mustn't you have been discarding? mustn't he have been discarding? mustn't we have been discarding? mustn't you have been discarding? mustn't they have been discarding?