English verb conjugation
MUST HYPHEN

Regular verb: hyphen - hyphened - hyphened

Affirmation

Simple form	V-ing form
I must hyphen you must hyphen he must hyphen we must hyphen you must hyphen they must hyphen	I must be hyphening you must be hyphening he must be hyphening we must be hyphening you must be hyphening they must be hyphening
Perfect	V-ing perfect
I must have hyphened you must have hyphened he must have hyphened we must have hyphened you must have hyphened they must have hyphened	I must have been hyphening you must have been hyphening he must have been hyphening we must have been hyphening you must have been hyphening they must have been hyphening

Negation

Simple form	V-ing form
I must not hyphen you must not hyphen he must not hyphen we must not hyphen you must not hyphen they must not hyphen	I must not be hyphening you must not be hyphening he must not be hyphening we must not be hyphening you must not be hyphening they must not be hyphening
Perfect	V-ing perfect
I must not have hyphened you must not have hyphened he must not have hyphened we must not have hyphened you must not have hyphened they must not have hyphened	I must not have been hyphening you must not have been hyphening he must not have been hyphening we must not have been hyphening you must not have been hyphening they must not have been hyphening

Interrogative form

Simple form	V-ing form
must I hyphen? must you hyphen? must he hyphen? must we hyphen? must you hyphen? must they hyphen?	must I be hyphening? must you be hyphening? must he be hyphening? must we be hyphening? must you be hyphening? must they be hyphening?
Perfect	V-ing perfect
must I have hyphened? must you have hyphened? must he have hyphened? must we have hyphened? must you have hyphened? must they have hyphened?	must I have been hyphening? must you have been hyphening? must he have been hyphening? must we have been hyphening? must you have been hyphening? must they have been hyphening?

Interro-negative form

Simple form	V-ing form
must I not hyphen? must you not hyphen? must he not hyphen? must we not hyphen? must you not hyphen? must they not hyphen?	must I not be hyphening? must you not be hyphening? must he not be hyphening? must we not be hyphening? must you not be hyphening? must they not be hyphening?
Perfect	V-ing perfect
must I not have hyphened? must you not have hyphened? must he not have hyphened? must we not have hyphened? must you not have hyphened? must they not have hyphened?	must I not have been hyphening? must you not have been hyphening? must he not have been hyphening? must we not have been hyphening? must you not have been hyphening? must they not have been hyphening?