English verb conjugation
MUST HURRAH

Regular verb: hurrah - hurrahed - hurrahed

Affirmation

Simple form	V-ing form
I must hurrah you must hurrah he must hurrah we must hurrah you must hurrah they must hurrah	I must be hurrahing you must be hurrahing he must be hurrahing we must be hurrahing you must be hurrahing they must be hurrahing
Perfect	V-ing perfect
I must have hurrahed you must have hurrahed he must have hurrahed we must have hurrahed you must have hurrahed they must have hurrahed	I must have been hurrahing you must have been hurrahing he must have been hurrahing we must have been hurrahing you must have been hurrahing they must have been hurrahing

Negation

Simple form	V-ing form
I mustn't hurrah you mustn't hurrah he mustn't hurrah we mustn't hurrah you mustn't hurrah they mustn't hurrah	I mustn't be hurrahing you mustn't be hurrahing he mustn't be hurrahing we mustn't be hurrahing you mustn't be hurrahing they mustn't be hurrahing
Perfect	V-ing perfect
I mustn't have hurrahed you mustn't have hurrahed he mustn't have hurrahed we mustn't have hurrahed you mustn't have hurrahed they mustn't have hurrahed	I mustn't have been hurrahing you mustn't have been hurrahing he mustn't have been hurrahing we mustn't have been hurrahing you mustn't have been hurrahing they mustn't have been hurrahing

Interrogative form

Simple form	V-ing form
must I hurrah? must you hurrah? must he hurrah? must we hurrah? must you hurrah? must they hurrah?	must I be hurrahing? must you be hurrahing? must he be hurrahing? must we be hurrahing? must you be hurrahing? must they be hurrahing?
Perfect	V-ing perfect
must I have hurrahed? must you have hurrahed? must he have hurrahed? must we have hurrahed? must you have hurrahed? must they have hurrahed?	must I have been hurrahing? must you have been hurrahing? must he have been hurrahing? must we have been hurrahing? must you have been hurrahing? must they have been hurrahing?

Interro-negative form

Simple form	V-ing form
mustn't I hurrah? mustn't you hurrah? mustn't he hurrah? mustn't we hurrah? mustn't you hurrah? mustn't they hurrah?	mustn't I be hurrahing? mustn't you be hurrahing? mustn't he be hurrahing? mustn't we be hurrahing? mustn't you be hurrahing? mustn't they be hurrahing?
Perfect	V-ing perfect
mustn't I have hurrahed? mustn't you have hurrahed? mustn't he have hurrahed? mustn't we have hurrahed? mustn't you have hurrahed? mustn't they have hurrahed?	mustn't I have been hurrahing? mustn't you have been hurrahing? mustn't he have been hurrahing? mustn't we have been hurrahing? mustn't you have been hurrahing? mustn't they have been hurrahing?