English verb conjugation
MUST PRONG

Regular verb: prong - pronged - pronged

Affirmation

Simple form	V-ing form
I must prong you must prong he must prong we must prong you must prong they must prong	I must be pronging you must be pronging he must be pronging we must be pronging you must be pronging they must be pronging
Perfect	V-ing perfect
I must have pronged you must have pronged he must have pronged we must have pronged you must have pronged they must have pronged	I must have been pronging you must have been pronging he must have been pronging we must have been pronging you must have been pronging they must have been pronging

Negation

Simple form	V-ing form
I mustn't prong you mustn't prong he mustn't prong we mustn't prong you mustn't prong they mustn't prong	I mustn't be pronging you mustn't be pronging he mustn't be pronging we mustn't be pronging you mustn't be pronging they mustn't be pronging
Perfect	V-ing perfect
I mustn't have pronged you mustn't have pronged he mustn't have pronged we mustn't have pronged you mustn't have pronged they mustn't have pronged	I mustn't have been pronging you mustn't have been pronging he mustn't have been pronging we mustn't have been pronging you mustn't have been pronging they mustn't have been pronging

Interrogative form

Simple form	V-ing form
must I prong? must you prong? must he prong? must we prong? must you prong? must they prong?	must I be pronging? must you be pronging? must he be pronging? must we be pronging? must you be pronging? must they be pronging?
Perfect	V-ing perfect
must I have pronged? must you have pronged? must he have pronged? must we have pronged? must you have pronged? must they have pronged?	must I have been pronging? must you have been pronging? must he have been pronging? must we have been pronging? must you have been pronging? must they have been pronging?

Interro-negative form

Simple form	V-ing form
mustn't I prong? mustn't you prong? mustn't he prong? mustn't we prong? mustn't you prong? mustn't they prong?	mustn't I be pronging? mustn't you be pronging? mustn't he be pronging? mustn't we be pronging? mustn't you be pronging? mustn't they be pronging?
Perfect	V-ing perfect
mustn't I have pronged? mustn't you have pronged? mustn't he have pronged? mustn't we have pronged? mustn't you have pronged? mustn't they have pronged?	mustn't I have been pronging? mustn't you have been pronging? mustn't he have been pronging? mustn't we have been pronging? mustn't you have been pronging? mustn't they have been pronging?