English verb conjugation
MUST WAIL

Regular verb: wail - wailed - wailed

Affirmation

Simple form	V-ing form
I must wail you must wail he must wail we must wail you must wail they must wail	I must be wailing you must be wailing he must be wailing we must be wailing you must be wailing they must be wailing
Perfect	V-ing perfect
I must have wailed you must have wailed he must have wailed we must have wailed you must have wailed they must have wailed	I must have been wailing you must have been wailing he must have been wailing we must have been wailing you must have been wailing they must have been wailing

Negation

Simple form	V-ing form
I mustn't wail you mustn't wail he mustn't wail we mustn't wail you mustn't wail they mustn't wail	I mustn't be wailing you mustn't be wailing he mustn't be wailing we mustn't be wailing you mustn't be wailing they mustn't be wailing
Perfect	V-ing perfect
I mustn't have wailed you mustn't have wailed he mustn't have wailed we mustn't have wailed you mustn't have wailed they mustn't have wailed	I mustn't have been wailing you mustn't have been wailing he mustn't have been wailing we mustn't have been wailing you mustn't have been wailing they mustn't have been wailing

Interrogative form

Simple form	V-ing form
must I wail? must you wail? must he wail? must we wail? must you wail? must they wail?	must I be wailing? must you be wailing? must he be wailing? must we be wailing? must you be wailing? must they be wailing?
Perfect	V-ing perfect
must I have wailed? must you have wailed? must he have wailed? must we have wailed? must you have wailed? must they have wailed?	must I have been wailing? must you have been wailing? must he have been wailing? must we have been wailing? must you have been wailing? must they have been wailing?

Interro-negative form

Simple form	V-ing form
mustn't I wail? mustn't you wail? mustn't he wail? mustn't we wail? mustn't you wail? mustn't they wail?	mustn't I be wailing? mustn't you be wailing? mustn't he be wailing? mustn't we be wailing? mustn't you be wailing? mustn't they be wailing?
Perfect	V-ing perfect
mustn't I have wailed? mustn't you have wailed? mustn't he have wailed? mustn't we have wailed? mustn't you have wailed? mustn't they have wailed?	mustn't I have been wailing? mustn't you have been wailing? mustn't he have been wailing? mustn't we have been wailing? mustn't you have been wailing? mustn't they have been wailing?