English verb conjugation
MUST OCTUPLE

Regular verb: octuple - octupled - octupled

Affirmation

Simple form	V-ing form
I must octuple you must octuple he must octuple we must octuple you must octuple they must octuple	I must be octupling you must be octupling he must be octupling we must be octupling you must be octupling they must be octupling
Perfect	V-ing perfect
I must have octupled you must have octupled he must have octupled we must have octupled you must have octupled they must have octupled	I must have been octupling you must have been octupling he must have been octupling we must have been octupling you must have been octupling they must have been octupling

Negation

Simple form	V-ing form
I must not octuple you must not octuple he must not octuple we must not octuple you must not octuple they must not octuple	I must not be octupling you must not be octupling he must not be octupling we must not be octupling you must not be octupling they must not be octupling
Perfect	V-ing perfect
I must not have octupled you must not have octupled he must not have octupled we must not have octupled you must not have octupled they must not have octupled	I must not have been octupling you must not have been octupling he must not have been octupling we must not have been octupling you must not have been octupling they must not have been octupling

Interrogative form

Simple form	V-ing form
must I octuple? must you octuple? must he octuple? must we octuple? must you octuple? must they octuple?	must I be octupling? must you be octupling? must he be octupling? must we be octupling? must you be octupling? must they be octupling?
Perfect	V-ing perfect
must I have octupled? must you have octupled? must he have octupled? must we have octupled? must you have octupled? must they have octupled?	must I have been octupling? must you have been octupling? must he have been octupling? must we have been octupling? must you have been octupling? must they have been octupling?

Interro-negative form

Simple form	V-ing form
must I not octuple? must you not octuple? must he not octuple? must we not octuple? must you not octuple? must they not octuple?	must I not be octupling? must you not be octupling? must he not be octupling? must we not be octupling? must you not be octupling? must they not be octupling?
Perfect	V-ing perfect
must I not have octupled? must you not have octupled? must he not have octupled? must we not have octupled? must you not have octupled? must they not have octupled?	must I not have been octupling? must you not have been octupling? must he not have been octupling? must we not have been octupling? must you not have been octupling? must they not have been octupling?