English verb conjugation
MUST QUINTUPLE

Regular verb: quintuple - quintupled - quintupled

Affirmation

Simple form	V-ing form
I must quintuple you must quintuple he must quintuple we must quintuple you must quintuple they must quintuple	I must be quintupling you must be quintupling he must be quintupling we must be quintupling you must be quintupling they must be quintupling
Perfect	V-ing perfect
I must have quintupled you must have quintupled he must have quintupled we must have quintupled you must have quintupled they must have quintupled	I must have been quintupling you must have been quintupling he must have been quintupling we must have been quintupling you must have been quintupling they must have been quintupling

Negation

Simple form	V-ing form
I mustn't quintuple you mustn't quintuple he mustn't quintuple we mustn't quintuple you mustn't quintuple they mustn't quintuple	I mustn't be quintupling you mustn't be quintupling he mustn't be quintupling we mustn't be quintupling you mustn't be quintupling they mustn't be quintupling
Perfect	V-ing perfect
I mustn't have quintupled you mustn't have quintupled he mustn't have quintupled we mustn't have quintupled you mustn't have quintupled they mustn't have quintupled	I mustn't have been quintupling you mustn't have been quintupling he mustn't have been quintupling we mustn't have been quintupling you mustn't have been quintupling they mustn't have been quintupling

Interrogative form

Simple form	V-ing form
must I quintuple? must you quintuple? must he quintuple? must we quintuple? must you quintuple? must they quintuple?	must I be quintupling? must you be quintupling? must he be quintupling? must we be quintupling? must you be quintupling? must they be quintupling?
Perfect	V-ing perfect
must I have quintupled? must you have quintupled? must he have quintupled? must we have quintupled? must you have quintupled? must they have quintupled?	must I have been quintupling? must you have been quintupling? must he have been quintupling? must we have been quintupling? must you have been quintupling? must they have been quintupling?

Interro-negative form

Simple form	V-ing form
mustn't I quintuple? mustn't you quintuple? mustn't he quintuple? mustn't we quintuple? mustn't you quintuple? mustn't they quintuple?	mustn't I be quintupling? mustn't you be quintupling? mustn't he be quintupling? mustn't we be quintupling? mustn't you be quintupling? mustn't they be quintupling?
Perfect	V-ing perfect
mustn't I have quintupled? mustn't you have quintupled? mustn't he have quintupled? mustn't we have quintupled? mustn't you have quintupled? mustn't they have quintupled?	mustn't I have been quintupling? mustn't you have been quintupling? mustn't he have been quintupling? mustn't we have been quintupling? mustn't you have been quintupling? mustn't they have been quintupling?