English verb conjugation
MUST GURGLE

Regular verb: gurgle - gurgled - gurgled

Affirmation

Simple form	V-ing form
I must gurgle you must gurgle he must gurgle we must gurgle you must gurgle they must gurgle	I must be gurgling you must be gurgling he must be gurgling we must be gurgling you must be gurgling they must be gurgling
Perfect	V-ing perfect
I must have gurgled you must have gurgled he must have gurgled we must have gurgled you must have gurgled they must have gurgled	I must have been gurgling you must have been gurgling he must have been gurgling we must have been gurgling you must have been gurgling they must have been gurgling

Negation

Simple form	V-ing form
I mustn't gurgle you mustn't gurgle he mustn't gurgle we mustn't gurgle you mustn't gurgle they mustn't gurgle	I mustn't be gurgling you mustn't be gurgling he mustn't be gurgling we mustn't be gurgling you mustn't be gurgling they mustn't be gurgling
Perfect	V-ing perfect
I mustn't have gurgled you mustn't have gurgled he mustn't have gurgled we mustn't have gurgled you mustn't have gurgled they mustn't have gurgled	I mustn't have been gurgling you mustn't have been gurgling he mustn't have been gurgling we mustn't have been gurgling you mustn't have been gurgling they mustn't have been gurgling

Interrogative form

Simple form	V-ing form
must I gurgle? must you gurgle? must he gurgle? must we gurgle? must you gurgle? must they gurgle?	must I be gurgling? must you be gurgling? must he be gurgling? must we be gurgling? must you be gurgling? must they be gurgling?
Perfect	V-ing perfect
must I have gurgled? must you have gurgled? must he have gurgled? must we have gurgled? must you have gurgled? must they have gurgled?	must I have been gurgling? must you have been gurgling? must he have been gurgling? must we have been gurgling? must you have been gurgling? must they have been gurgling?

Interro-negative form

Simple form	V-ing form
mustn't I gurgle? mustn't you gurgle? mustn't he gurgle? mustn't we gurgle? mustn't you gurgle? mustn't they gurgle?	mustn't I be gurgling? mustn't you be gurgling? mustn't he be gurgling? mustn't we be gurgling? mustn't you be gurgling? mustn't they be gurgling?
Perfect	V-ing perfect
mustn't I have gurgled? mustn't you have gurgled? mustn't he have gurgled? mustn't we have gurgled? mustn't you have gurgled? mustn't they have gurgled?	mustn't I have been gurgling? mustn't you have been gurgling? mustn't he have been gurgling? mustn't we have been gurgling? mustn't you have been gurgling? mustn't they have been gurgling?