English verb conjugation
MUST SPEAK

Irregular verb: speak - spoke - spoken, spoke

Affirmation

Simple form	V-ing form
I must speak you must speak she must speak we must speak you must speak they must speak	I must be speaking you must be speaking she must be speaking we must be speaking you must be speaking they must be speaking
Perfect	V-ing perfect
I must have spoken, spoke you must have spoken, spoke she must have spoken, spoke we must have spoken, spoke you must have spoken, spoke they must have spoken, spoke	I must have been speaking you must have been speaking she must have been speaking we must have been speaking you must have been speaking they must have been speaking

Negation

Simple form	V-ing form
I must not speak you must not speak she must not speak we must not speak you must not speak they must not speak	I must not be speaking you must not be speaking she must not be speaking we must not be speaking you must not be speaking they must not be speaking
Perfect	V-ing perfect
I must not have spoken, spoke you must not have spoken, spoke she must not have spoken, spoke we must not have spoken, spoke you must not have spoken, spoke they must not have spoken, spoke	I must not have been speaking you must not have been speaking she must not have been speaking we must not have been speaking you must not have been speaking they must not have been speaking

Interrogative form

Simple form	V-ing form
must I speak? must you speak? must she speak? must we speak? must you speak? must they speak?	must I be speaking? must you be speaking? must she be speaking? must we be speaking? must you be speaking? must they be speaking?
Perfect	V-ing perfect
must I have spoken, spoke? must you have spoken, spoke? must she have spoken, spoke? must we have spoken, spoke? must you have spoken, spoke? must they have spoken, spoke?	must I have been speaking? must you have been speaking? must she have been speaking? must we have been speaking? must you have been speaking? must they have been speaking?

Interro-negative form

Simple form	V-ing form
must I not speak? must you not speak? must she not speak? must we not speak? must you not speak? must they not speak?	must I not be speaking? must you not be speaking? must she not be speaking? must we not be speaking? must you not be speaking? must they not be speaking?
Perfect	V-ing perfect
must I not have spoken, spoke? must you not have spoken, spoke? must she not have spoken, spoke? must we not have spoken, spoke? must you not have spoken, spoke? must they not have spoken, spoke?	must I not have been speaking? must you not have been speaking? must she not have been speaking? must we not have been speaking? must you not have been speaking? must they not have been speaking?