English verb conjugation
MUST HARRUMPH

Regular verb: harrumph - harrumphed - harrumphed

Affirmation

Simple form	V-ing form
I must harrumph you must harrumph he must harrumph we must harrumph you must harrumph they must harrumph	I must be harrumphing you must be harrumphing he must be harrumphing we must be harrumphing you must be harrumphing they must be harrumphing
Perfect	V-ing perfect
I must have harrumphed you must have harrumphed he must have harrumphed we must have harrumphed you must have harrumphed they must have harrumphed	I must have been harrumphing you must have been harrumphing he must have been harrumphing we must have been harrumphing you must have been harrumphing they must have been harrumphing

Negation

Simple form	V-ing form
I mustn't harrumph you mustn't harrumph he mustn't harrumph we mustn't harrumph you mustn't harrumph they mustn't harrumph	I mustn't be harrumphing you mustn't be harrumphing he mustn't be harrumphing we mustn't be harrumphing you mustn't be harrumphing they mustn't be harrumphing
Perfect	V-ing perfect
I mustn't have harrumphed you mustn't have harrumphed he mustn't have harrumphed we mustn't have harrumphed you mustn't have harrumphed they mustn't have harrumphed	I mustn't have been harrumphing you mustn't have been harrumphing he mustn't have been harrumphing we mustn't have been harrumphing you mustn't have been harrumphing they mustn't have been harrumphing

Interrogative form

Simple form	V-ing form
must I harrumph? must you harrumph? must he harrumph? must we harrumph? must you harrumph? must they harrumph?	must I be harrumphing? must you be harrumphing? must he be harrumphing? must we be harrumphing? must you be harrumphing? must they be harrumphing?
Perfect	V-ing perfect
must I have harrumphed? must you have harrumphed? must he have harrumphed? must we have harrumphed? must you have harrumphed? must they have harrumphed?	must I have been harrumphing? must you have been harrumphing? must he have been harrumphing? must we have been harrumphing? must you have been harrumphing? must they have been harrumphing?

Interro-negative form

Simple form	V-ing form
mustn't I harrumph? mustn't you harrumph? mustn't he harrumph? mustn't we harrumph? mustn't you harrumph? mustn't they harrumph?	mustn't I be harrumphing? mustn't you be harrumphing? mustn't he be harrumphing? mustn't we be harrumphing? mustn't you be harrumphing? mustn't they be harrumphing?
Perfect	V-ing perfect
mustn't I have harrumphed? mustn't you have harrumphed? mustn't he have harrumphed? mustn't we have harrumphed? mustn't you have harrumphed? mustn't they have harrumphed?	mustn't I have been harrumphing? mustn't you have been harrumphing? mustn't he have been harrumphing? mustn't we have been harrumphing? mustn't you have been harrumphing? mustn't they have been harrumphing?