English verb conjugation
MUST DIPHTHONGIZE

Regular verb: diphthongize - diphthongized - diphthongized

Affirmation

Simple form	V-ing form
I must diphthongize you must diphthongize he must diphthongize we must diphthongize you must diphthongize they must diphthongize	I must be diphthongizing you must be diphthongizing he must be diphthongizing we must be diphthongizing you must be diphthongizing they must be diphthongizing
Perfect	V-ing perfect
I must have diphthongized you must have diphthongized he must have diphthongized we must have diphthongized you must have diphthongized they must have diphthongized	I must have been diphthongizing you must have been diphthongizing he must have been diphthongizing we must have been diphthongizing you must have been diphthongizing they must have been diphthongizing

Negation

Simple form	V-ing form
I must not diphthongize you must not diphthongize he must not diphthongize we must not diphthongize you must not diphthongize they must not diphthongize	I must not be diphthongizing you must not be diphthongizing he must not be diphthongizing we must not be diphthongizing you must not be diphthongizing they must not be diphthongizing
Perfect	V-ing perfect
I must not have diphthongized you must not have diphthongized he must not have diphthongized we must not have diphthongized you must not have diphthongized they must not have diphthongized	I must not have been diphthongizing you must not have been diphthongizing he must not have been diphthongizing we must not have been diphthongizing you must not have been diphthongizing they must not have been diphthongizing

Interrogative form

Simple form	V-ing form
must I diphthongize? must you diphthongize? must he diphthongize? must we diphthongize? must you diphthongize? must they diphthongize?	must I be diphthongizing? must you be diphthongizing? must he be diphthongizing? must we be diphthongizing? must you be diphthongizing? must they be diphthongizing?
Perfect	V-ing perfect
must I have diphthongized? must you have diphthongized? must he have diphthongized? must we have diphthongized? must you have diphthongized? must they have diphthongized?	must I have been diphthongizing? must you have been diphthongizing? must he have been diphthongizing? must we have been diphthongizing? must you have been diphthongizing? must they have been diphthongizing?

Interro-negative form

Simple form	V-ing form
must I not diphthongize? must you not diphthongize? must he not diphthongize? must we not diphthongize? must you not diphthongize? must they not diphthongize?	must I not be diphthongizing? must you not be diphthongizing? must he not be diphthongizing? must we not be diphthongizing? must you not be diphthongizing? must they not be diphthongizing?
Perfect	V-ing perfect
must I not have diphthongized? must you not have diphthongized? must he not have diphthongized? must we not have diphthongized? must you not have diphthongized? must they not have diphthongized?	must I not have been diphthongizing? must you not have been diphthongizing? must he not have been diphthongizing? must we not have been diphthongizing? must you not have been diphthongizing? must they not have been diphthongizing?