must negotiate
Regular verb: negotiate - negotiated- negotiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must negotiate
you must negotiate
he must negotiate
we must negotiate
you must negotiate
they must negotiate 	I must be negotiating
you must be negotiating
he must be negotiating
we must be negotiating
you must be negotiating
they must be negotiating	I must have negotiated
you must have negotiated
he must have negotiated
we must have negotiated
you must have negotiated
they must have negotiated	I must have been negotiating
you must have been negotiating
he must have been negotiating
we must have been negotiating
you must have been negotiating
they must have been negotiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't negotiate
you mustn't negotiate
he mustn't negotiate
we mustn't negotiate
you mustn't negotiate
they mustn't negotiate 	I mustn't be negotiating
you mustn't be negotiating
he mustn't be negotiating
we mustn't be negotiating
you mustn't be negotiating
they mustn't be negotiating	I mustn't have negotiated
you mustn't have negotiated
he mustn't have negotiated
we mustn't have negotiated
you mustn't have negotiated
they mustn't have negotiated	I mustn't have been negotiating
you mustn't have been negotiating
he mustn't have been negotiating
we mustn't have been negotiating
you mustn't have been negotiating
they mustn't have been negotiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I negotiate?
must you negotiate?
must he negotiate?
must we negotiate?
must you negotiate?
must they negotiate? 	must I be negotiating?
must you be negotiating?
must he be negotiating?
must we be negotiating?
must you be negotiating?
must they be negotiating? 	must I have negotiated?
must you have negotiated?
must he have negotiated?
must we have negotiated?
must you have negotiated?
must they have negotiated? 	must I have been negotiating?
must you have been negotiating?
must he have been negotiating?
must we have been negotiating?
must you have been negotiating?
must they have been negotiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I negotiate?
mustn't you negotiate?
mustn't he negotiate?
mustn't we negotiate?
mustn't you negotiate?
mustn't they negotiate? 	mustn't I be negotiating?
mustn't you be negotiating?
mustn't he be negotiating?
mustn't we be negotiating?
mustn't you be negotiating?
mustn't they be negotiating? 	mustn't I have negotiated?
mustn't you have negotiated?
mustn't he have negotiated?
mustn't we have negotiated?
mustn't you have negotiated?
mustn't they have negotiated? 	mustn't I have been negotiating?
mustn't you have been negotiating?
mustn't he have been negotiating?
mustn't we have been negotiating?
mustn't you have been negotiating?
mustn't they have been negotiating?