English verb conjugation
MUST FILIBUSTER

Regular verb: filibuster - filibustered - filibustered

Affirmation

Simple form	V-ing form
I must filibuster you must filibuster he must filibuster we must filibuster you must filibuster they must filibuster	I must be filibustering you must be filibustering he must be filibustering we must be filibustering you must be filibustering they must be filibustering
Perfect	V-ing perfect
I must have filibustered you must have filibustered he must have filibustered we must have filibustered you must have filibustered they must have filibustered	I must have been filibustering you must have been filibustering he must have been filibustering we must have been filibustering you must have been filibustering they must have been filibustering

Negation

Simple form	V-ing form
I mustn't filibuster you mustn't filibuster he mustn't filibuster we mustn't filibuster you mustn't filibuster they mustn't filibuster	I mustn't be filibustering you mustn't be filibustering he mustn't be filibustering we mustn't be filibustering you mustn't be filibustering they mustn't be filibustering
Perfect	V-ing perfect
I mustn't have filibustered you mustn't have filibustered he mustn't have filibustered we mustn't have filibustered you mustn't have filibustered they mustn't have filibustered	I mustn't have been filibustering you mustn't have been filibustering he mustn't have been filibustering we mustn't have been filibustering you mustn't have been filibustering they mustn't have been filibustering

Interrogative form

Simple form	V-ing form
must I filibuster? must you filibuster? must he filibuster? must we filibuster? must you filibuster? must they filibuster?	must I be filibustering? must you be filibustering? must he be filibustering? must we be filibustering? must you be filibustering? must they be filibustering?
Perfect	V-ing perfect
must I have filibustered? must you have filibustered? must he have filibustered? must we have filibustered? must you have filibustered? must they have filibustered?	must I have been filibustering? must you have been filibustering? must he have been filibustering? must we have been filibustering? must you have been filibustering? must they have been filibustering?

Interro-negative form

Simple form	V-ing form
mustn't I filibuster? mustn't you filibuster? mustn't he filibuster? mustn't we filibuster? mustn't you filibuster? mustn't they filibuster?	mustn't I be filibustering? mustn't you be filibustering? mustn't he be filibustering? mustn't we be filibustering? mustn't you be filibustering? mustn't they be filibustering?
Perfect	V-ing perfect
mustn't I have filibustered? mustn't you have filibustered? mustn't he have filibustered? mustn't we have filibustered? mustn't you have filibustered? mustn't they have filibustered?	mustn't I have been filibustering? mustn't you have been filibustering? mustn't he have been filibustering? mustn't we have been filibustering? mustn't you have been filibustering? mustn't they have been filibustering?