English verb conjugation
MUST FOOT

Regular verb: foot - footed - footed

Affirmation

Simple form	V-ing form
I must foot you must foot he must foot we must foot you must foot they must foot	I must be footing you must be footing he must be footing we must be footing you must be footing they must be footing
Perfect	V-ing perfect
I must have footed you must have footed he must have footed we must have footed you must have footed they must have footed	I must have been footing you must have been footing he must have been footing we must have been footing you must have been footing they must have been footing

Negation

Simple form	V-ing form
I mustn't foot you mustn't foot he mustn't foot we mustn't foot you mustn't foot they mustn't foot	I mustn't be footing you mustn't be footing he mustn't be footing we mustn't be footing you mustn't be footing they mustn't be footing
Perfect	V-ing perfect
I mustn't have footed you mustn't have footed he mustn't have footed we mustn't have footed you mustn't have footed they mustn't have footed	I mustn't have been footing you mustn't have been footing he mustn't have been footing we mustn't have been footing you mustn't have been footing they mustn't have been footing

Interrogative form

Simple form	V-ing form
must I foot? must you foot? must he foot? must we foot? must you foot? must they foot?	must I be footing? must you be footing? must he be footing? must we be footing? must you be footing? must they be footing?
Perfect	V-ing perfect
must I have footed? must you have footed? must he have footed? must we have footed? must you have footed? must they have footed?	must I have been footing? must you have been footing? must he have been footing? must we have been footing? must you have been footing? must they have been footing?

Interro-negative form

Simple form	V-ing form
mustn't I foot? mustn't you foot? mustn't he foot? mustn't we foot? mustn't you foot? mustn't they foot?	mustn't I be footing? mustn't you be footing? mustn't he be footing? mustn't we be footing? mustn't you be footing? mustn't they be footing?
Perfect	V-ing perfect
mustn't I have footed? mustn't you have footed? mustn't he have footed? mustn't we have footed? mustn't you have footed? mustn't they have footed?	mustn't I have been footing? mustn't you have been footing? mustn't he have been footing? mustn't we have been footing? mustn't you have been footing? mustn't they have been footing?