English verb conjugation
MUST DOGFIGHT

Irregular verb: dogfight - dogfought - dogfought

Affirmation

Simple form	V-ing form
I must dogfight you must dogfight he must dogfight we must dogfight you must dogfight they must dogfight	I must be dogfighting you must be dogfighting he must be dogfighting we must be dogfighting you must be dogfighting they must be dogfighting
Perfect	V-ing perfect
I must have dogfought you must have dogfought he must have dogfought we must have dogfought you must have dogfought they must have dogfought	I must have been dogfighting you must have been dogfighting he must have been dogfighting we must have been dogfighting you must have been dogfighting they must have been dogfighting

Negation

Simple form	V-ing form
I mustn't dogfight you mustn't dogfight he mustn't dogfight we mustn't dogfight you mustn't dogfight they mustn't dogfight	I mustn't be dogfighting you mustn't be dogfighting he mustn't be dogfighting we mustn't be dogfighting you mustn't be dogfighting they mustn't be dogfighting
Perfect	V-ing perfect
I mustn't have dogfought you mustn't have dogfought he mustn't have dogfought we mustn't have dogfought you mustn't have dogfought they mustn't have dogfought	I mustn't have been dogfighting you mustn't have been dogfighting he mustn't have been dogfighting we mustn't have been dogfighting you mustn't have been dogfighting they mustn't have been dogfighting

Interrogative form

Simple form	V-ing form
must I dogfight? must you dogfight? must he dogfight? must we dogfight? must you dogfight? must they dogfight?	must I be dogfighting? must you be dogfighting? must he be dogfighting? must we be dogfighting? must you be dogfighting? must they be dogfighting?
Perfect	V-ing perfect
must I have dogfought? must you have dogfought? must he have dogfought? must we have dogfought? must you have dogfought? must they have dogfought?	must I have been dogfighting? must you have been dogfighting? must he have been dogfighting? must we have been dogfighting? must you have been dogfighting? must they have been dogfighting?

Interro-negative form

Simple form	V-ing form
mustn't I dogfight? mustn't you dogfight? mustn't he dogfight? mustn't we dogfight? mustn't you dogfight? mustn't they dogfight?	mustn't I be dogfighting? mustn't you be dogfighting? mustn't he be dogfighting? mustn't we be dogfighting? mustn't you be dogfighting? mustn't they be dogfighting?
Perfect	V-ing perfect
mustn't I have dogfought? mustn't you have dogfought? mustn't he have dogfought? mustn't we have dogfought? mustn't you have dogfought? mustn't they have dogfought?	mustn't I have been dogfighting? mustn't you have been dogfighting? mustn't he have been dogfighting? mustn't we have been dogfighting? mustn't you have been dogfighting? mustn't they have been dogfighting?