English verb conjugation
MUST DISCONTINUE

Regular verb: discontinue - discontinued - discontinued

Affirmation

Simple form	V-ing form
I must discontinue you must discontinue he must discontinue we must discontinue you must discontinue they must discontinue	I must be discontinuing you must be discontinuing he must be discontinuing we must be discontinuing you must be discontinuing they must be discontinuing
Perfect	V-ing perfect
I must have discontinued you must have discontinued he must have discontinued we must have discontinued you must have discontinued they must have discontinued	I must have been discontinuing you must have been discontinuing he must have been discontinuing we must have been discontinuing you must have been discontinuing they must have been discontinuing

Negation

Simple form	V-ing form
I mustn't discontinue you mustn't discontinue he mustn't discontinue we mustn't discontinue you mustn't discontinue they mustn't discontinue	I mustn't be discontinuing you mustn't be discontinuing he mustn't be discontinuing we mustn't be discontinuing you mustn't be discontinuing they mustn't be discontinuing
Perfect	V-ing perfect
I mustn't have discontinued you mustn't have discontinued he mustn't have discontinued we mustn't have discontinued you mustn't have discontinued they mustn't have discontinued	I mustn't have been discontinuing you mustn't have been discontinuing he mustn't have been discontinuing we mustn't have been discontinuing you mustn't have been discontinuing they mustn't have been discontinuing

Interrogative form

Simple form	V-ing form
must I discontinue? must you discontinue? must he discontinue? must we discontinue? must you discontinue? must they discontinue?	must I be discontinuing? must you be discontinuing? must he be discontinuing? must we be discontinuing? must you be discontinuing? must they be discontinuing?
Perfect	V-ing perfect
must I have discontinued? must you have discontinued? must he have discontinued? must we have discontinued? must you have discontinued? must they have discontinued?	must I have been discontinuing? must you have been discontinuing? must he have been discontinuing? must we have been discontinuing? must you have been discontinuing? must they have been discontinuing?

Interro-negative form

Simple form	V-ing form
mustn't I discontinue? mustn't you discontinue? mustn't he discontinue? mustn't we discontinue? mustn't you discontinue? mustn't they discontinue?	mustn't I be discontinuing? mustn't you be discontinuing? mustn't he be discontinuing? mustn't we be discontinuing? mustn't you be discontinuing? mustn't they be discontinuing?
Perfect	V-ing perfect
mustn't I have discontinued? mustn't you have discontinued? mustn't he have discontinued? mustn't we have discontinued? mustn't you have discontinued? mustn't they have discontinued?	mustn't I have been discontinuing? mustn't you have been discontinuing? mustn't he have been discontinuing? mustn't we have been discontinuing? mustn't you have been discontinuing? mustn't they have been discontinuing?