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 must not quintuple you must not quintuple he must not quintuple we must not quintuple you must not quintuple they must not quintuple	I must not be quintupling you must not be quintupling he must not be quintupling we must not be quintupling you must not be quintupling they must not be quintupling
Perfect	V-ing perfect
I must not have quintupled you must not have quintupled he must not have quintupled we must not have quintupled you must not have quintupled they must not have quintupled	I must not have been quintupling you must not have been quintupling he must not have been quintupling we must not have been quintupling you must not have been quintupling they must not 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
must I not quintuple? must you not quintuple? must he not quintuple? must we not quintuple? must you not quintuple? must they not quintuple?	must I not be quintupling? must you not be quintupling? must he not be quintupling? must we not be quintupling? must you not be quintupling? must they not be quintupling?
Perfect	V-ing perfect
must I not have quintupled? must you not have quintupled? must he not have quintupled? must we not have quintupled? must you not have quintupled? must they not have quintupled?	must I not have been quintupling? must you not have been quintupling? must he not have been quintupling? must we not have been quintupling? must you not have been quintupling? must they not have been quintupling?