English verb conjugation
MUST BARBECUE

Regular verb: barbecue - barbecued - barbecued

Affirmation

Simple form	V-ing form
I must barbecue you must barbecue she must barbecue we must barbecue you must barbecue they must barbecue	I must be barbecuing you must be barbecuing she must be barbecuing we must be barbecuing you must be barbecuing they must be barbecuing
Perfect	V-ing perfect
I must have barbecued you must have barbecued she must have barbecued we must have barbecued you must have barbecued they must have barbecued	I must have been barbecuing you must have been barbecuing she must have been barbecuing we must have been barbecuing you must have been barbecuing they must have been barbecuing

Negation

Simple form	V-ing form
I mustn't barbecue you mustn't barbecue she mustn't barbecue we mustn't barbecue you mustn't barbecue they mustn't barbecue	I mustn't be barbecuing you mustn't be barbecuing she mustn't be barbecuing we mustn't be barbecuing you mustn't be barbecuing they mustn't be barbecuing
Perfect	V-ing perfect
I mustn't have barbecued you mustn't have barbecued she mustn't have barbecued we mustn't have barbecued you mustn't have barbecued they mustn't have barbecued	I mustn't have been barbecuing you mustn't have been barbecuing she mustn't have been barbecuing we mustn't have been barbecuing you mustn't have been barbecuing they mustn't have been barbecuing

Interrogative form

Simple form	V-ing form
must I barbecue? must you barbecue? must she barbecue? must we barbecue? must you barbecue? must they barbecue?	must I be barbecuing? must you be barbecuing? must she be barbecuing? must we be barbecuing? must you be barbecuing? must they be barbecuing?
Perfect	V-ing perfect
must I have barbecued? must you have barbecued? must she have barbecued? must we have barbecued? must you have barbecued? must they have barbecued?	must I have been barbecuing? must you have been barbecuing? must she have been barbecuing? must we have been barbecuing? must you have been barbecuing? must they have been barbecuing?

Interro-negative form

Simple form	V-ing form
mustn't I barbecue? mustn't you barbecue? mustn't she barbecue? mustn't we barbecue? mustn't you barbecue? mustn't they barbecue?	mustn't I be barbecuing? mustn't you be barbecuing? mustn't she be barbecuing? mustn't we be barbecuing? mustn't you be barbecuing? mustn't they be barbecuing?
Perfect	V-ing perfect
mustn't I have barbecued? mustn't you have barbecued? mustn't she have barbecued? mustn't we have barbecued? mustn't you have barbecued? mustn't they have barbecued?	mustn't I have been barbecuing? mustn't you have been barbecuing? mustn't she have been barbecuing? mustn't we have been barbecuing? mustn't you have been barbecuing? mustn't they have been barbecuing?