must barbecue
Regular verb: barbecue - barbecued- barbecued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must barbecue
you must barbecue
he must barbecue
we must barbecue
you must barbecue
they must barbecue 	I must be barbecuing
you must be barbecuing
he must be barbecuing
we must be barbecuing
you must be barbecuing
they must be barbecuing	I must have barbecued
you must have barbecued
he 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
he 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 	Perfect 	V-ing perfect 	
I must not barbecue
you must not barbecue
he must not barbecue
we must not barbecue
you must not barbecue
they must not barbecue 	I must not be barbecuing
you must not be barbecuing
he must not be barbecuing
we must not be barbecuing
you must not be barbecuing
they must not be barbecuing	I must not have barbecued
you must not have barbecued
he must not have barbecued
we must not have barbecued
you must not have barbecued
they must not have barbecued	I must not have been barbecuing
you must not have been barbecuing
he must not have been barbecuing
we must not have been barbecuing
you must not have been barbecuing
they must not have been barbecuing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I barbecue?
must you barbecue?
must he barbecue?
must we barbecue?
must you barbecue?
must they barbecue? 	must I be barbecuing?
must you be barbecuing?
must he be barbecuing?
must we be barbecuing?
must you be barbecuing?
must they be barbecuing? 	must I have barbecued?
must you have barbecued?
must he 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 he 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 	Perfect 	V-ing perfect 	
must I not barbecue?
must you not barbecue?
must he not barbecue?
must we not barbecue?
must you not barbecue?
must they not barbecue? 	must I not be barbecuing?
must you not be barbecuing?
must he not be barbecuing?
must we not be barbecuing?
must you not be barbecuing?
must they not be barbecuing? 	must I not have barbecued?
must you not have barbecued?
must he not have barbecued?
must we not have barbecued?
must you not have barbecued?
must they not have barbecued? 	must I not have been barbecuing?
must you not have been barbecuing?
must he not have been barbecuing?
must we not have been barbecuing?
must you not have been barbecuing?
must they not have been barbecuing?