English verb conjugation
MUST ASSAIL

Regular verb: assail - assailed - assailed

Affirmation

Simple form	V-ing form
I must assail you must assail she must assail we must assail you must assail they must assail	I must be assailing you must be assailing she must be assailing we must be assailing you must be assailing they must be assailing
Perfect	V-ing perfect
I must have assailed you must have assailed she must have assailed we must have assailed you must have assailed they must have assailed	I must have been assailing you must have been assailing she must have been assailing we must have been assailing you must have been assailing they must have been assailing

Negation

Simple form	V-ing form
I mustn't assail you mustn't assail she mustn't assail we mustn't assail you mustn't assail they mustn't assail	I mustn't be assailing you mustn't be assailing she mustn't be assailing we mustn't be assailing you mustn't be assailing they mustn't be assailing
Perfect	V-ing perfect
I mustn't have assailed you mustn't have assailed she mustn't have assailed we mustn't have assailed you mustn't have assailed they mustn't have assailed	I mustn't have been assailing you mustn't have been assailing she mustn't have been assailing we mustn't have been assailing you mustn't have been assailing they mustn't have been assailing

Interrogative form

Simple form	V-ing form
must I assail? must you assail? must she assail? must we assail? must you assail? must they assail?	must I be assailing? must you be assailing? must she be assailing? must we be assailing? must you be assailing? must they be assailing?
Perfect	V-ing perfect
must I have assailed? must you have assailed? must she have assailed? must we have assailed? must you have assailed? must they have assailed?	must I have been assailing? must you have been assailing? must she have been assailing? must we have been assailing? must you have been assailing? must they have been assailing?

Interro-negative form

Simple form	V-ing form
mustn't I assail? mustn't you assail? mustn't she assail? mustn't we assail? mustn't you assail? mustn't they assail?	mustn't I be assailing? mustn't you be assailing? mustn't she be assailing? mustn't we be assailing? mustn't you be assailing? mustn't they be assailing?
Perfect	V-ing perfect
mustn't I have assailed? mustn't you have assailed? mustn't she have assailed? mustn't we have assailed? mustn't you have assailed? mustn't they have assailed?	mustn't I have been assailing? mustn't you have been assailing? mustn't she have been assailing? mustn't we have been assailing? mustn't you have been assailing? mustn't they have been assailing?