English verb conjugation
MUST MORPH

Regular verb: morph - morphed - morphed

Affirmation

Simple form	V-ing form
I must morph you must morph she must morph we must morph you must morph they must morph	I must be morphing you must be morphing she must be morphing we must be morphing you must be morphing they must be morphing
Perfect	V-ing perfect
I must have morphed you must have morphed she must have morphed we must have morphed you must have morphed they must have morphed	I must have been morphing you must have been morphing she must have been morphing we must have been morphing you must have been morphing they must have been morphing

Negation

Simple form	V-ing form
I mustn't morph you mustn't morph she mustn't morph we mustn't morph you mustn't morph they mustn't morph	I mustn't be morphing you mustn't be morphing she mustn't be morphing we mustn't be morphing you mustn't be morphing they mustn't be morphing
Perfect	V-ing perfect
I mustn't have morphed you mustn't have morphed she mustn't have morphed we mustn't have morphed you mustn't have morphed they mustn't have morphed	I mustn't have been morphing you mustn't have been morphing she mustn't have been morphing we mustn't have been morphing you mustn't have been morphing they mustn't have been morphing

Interrogative form

Simple form	V-ing form
must I morph? must you morph? must she morph? must we morph? must you morph? must they morph?	must I be morphing? must you be morphing? must she be morphing? must we be morphing? must you be morphing? must they be morphing?
Perfect	V-ing perfect
must I have morphed? must you have morphed? must she have morphed? must we have morphed? must you have morphed? must they have morphed?	must I have been morphing? must you have been morphing? must she have been morphing? must we have been morphing? must you have been morphing? must they have been morphing?

Interro-negative form

Simple form	V-ing form
mustn't I morph? mustn't you morph? mustn't she morph? mustn't we morph? mustn't you morph? mustn't they morph?	mustn't I be morphing? mustn't you be morphing? mustn't she be morphing? mustn't we be morphing? mustn't you be morphing? mustn't they be morphing?
Perfect	V-ing perfect
mustn't I have morphed? mustn't you have morphed? mustn't she have morphed? mustn't we have morphed? mustn't you have morphed? mustn't they have morphed?	mustn't I have been morphing? mustn't you have been morphing? mustn't she have been morphing? mustn't we have been morphing? mustn't you have been morphing? mustn't they have been morphing?