English verb conjugation
MUST INGULF

Regular verb: ingulf - ingulfed - ingulfed

Affirmation

Simple form	V-ing form
I must ingulf you must ingulf he must ingulf we must ingulf you must ingulf they must ingulf	I must be ingulfing you must be ingulfing he must be ingulfing we must be ingulfing you must be ingulfing they must be ingulfing
Perfect	V-ing perfect
I must have ingulfed you must have ingulfed he must have ingulfed we must have ingulfed you must have ingulfed they must have ingulfed	I must have been ingulfing you must have been ingulfing he must have been ingulfing we must have been ingulfing you must have been ingulfing they must have been ingulfing

Negation

Simple form	V-ing form
I mustn't ingulf you mustn't ingulf he mustn't ingulf we mustn't ingulf you mustn't ingulf they mustn't ingulf	I mustn't be ingulfing you mustn't be ingulfing he mustn't be ingulfing we mustn't be ingulfing you mustn't be ingulfing they mustn't be ingulfing
Perfect	V-ing perfect
I mustn't have ingulfed you mustn't have ingulfed he mustn't have ingulfed we mustn't have ingulfed you mustn't have ingulfed they mustn't have ingulfed	I mustn't have been ingulfing you mustn't have been ingulfing he mustn't have been ingulfing we mustn't have been ingulfing you mustn't have been ingulfing they mustn't have been ingulfing

Interrogative form

Simple form	V-ing form
must I ingulf? must you ingulf? must he ingulf? must we ingulf? must you ingulf? must they ingulf?	must I be ingulfing? must you be ingulfing? must he be ingulfing? must we be ingulfing? must you be ingulfing? must they be ingulfing?
Perfect	V-ing perfect
must I have ingulfed? must you have ingulfed? must he have ingulfed? must we have ingulfed? must you have ingulfed? must they have ingulfed?	must I have been ingulfing? must you have been ingulfing? must he have been ingulfing? must we have been ingulfing? must you have been ingulfing? must they have been ingulfing?

Interro-negative form

Simple form	V-ing form
mustn't I ingulf? mustn't you ingulf? mustn't he ingulf? mustn't we ingulf? mustn't you ingulf? mustn't they ingulf?	mustn't I be ingulfing? mustn't you be ingulfing? mustn't he be ingulfing? mustn't we be ingulfing? mustn't you be ingulfing? mustn't they be ingulfing?
Perfect	V-ing perfect
mustn't I have ingulfed? mustn't you have ingulfed? mustn't he have ingulfed? mustn't we have ingulfed? mustn't you have ingulfed? mustn't they have ingulfed?	mustn't I have been ingulfing? mustn't you have been ingulfing? mustn't he have been ingulfing? mustn't we have been ingulfing? mustn't you have been ingulfing? mustn't they have been ingulfing?