must jettison
Regular verb: jettison - jettisoned- jettisoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must jettison
you must jettison
he must jettison
we must jettison
you must jettison
they must jettison 	I must be jettisoning
you must be jettisoning
he must be jettisoning
we must be jettisoning
you must be jettisoning
they must be jettisoning	I must have jettisoned
you must have jettisoned
he must have jettisoned
we must have jettisoned
you must have jettisoned
they must have jettisoned	I must have been jettisoning
you must have been jettisoning
he must have been jettisoning
we must have been jettisoning
you must have been jettisoning
they must have been jettisoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't jettison
you mustn't jettison
he mustn't jettison
we mustn't jettison
you mustn't jettison
they mustn't jettison 	I mustn't be jettisoning
you mustn't be jettisoning
he mustn't be jettisoning
we mustn't be jettisoning
you mustn't be jettisoning
they mustn't be jettisoning	I mustn't have jettisoned
you mustn't have jettisoned
he mustn't have jettisoned
we mustn't have jettisoned
you mustn't have jettisoned
they mustn't have jettisoned	I mustn't have been jettisoning
you mustn't have been jettisoning
he mustn't have been jettisoning
we mustn't have been jettisoning
you mustn't have been jettisoning
they mustn't have been jettisoning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I jettison?
must you jettison?
must he jettison?
must we jettison?
must you jettison?
must they jettison? 	must I be jettisoning?
must you be jettisoning?
must he be jettisoning?
must we be jettisoning?
must you be jettisoning?
must they be jettisoning? 	must I have jettisoned?
must you have jettisoned?
must he have jettisoned?
must we have jettisoned?
must you have jettisoned?
must they have jettisoned? 	must I have been jettisoning?
must you have been jettisoning?
must he have been jettisoning?
must we have been jettisoning?
must you have been jettisoning?
must they have been jettisoning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I jettison?
mustn't you jettison?
mustn't he jettison?
mustn't we jettison?
mustn't you jettison?
mustn't they jettison? 	mustn't I be jettisoning?
mustn't you be jettisoning?
mustn't he be jettisoning?
mustn't we be jettisoning?
mustn't you be jettisoning?
mustn't they be jettisoning? 	mustn't I have jettisoned?
mustn't you have jettisoned?
mustn't he have jettisoned?
mustn't we have jettisoned?
mustn't you have jettisoned?
mustn't they have jettisoned? 	mustn't I have been jettisoning?
mustn't you have been jettisoning?
mustn't he have been jettisoning?
mustn't we have been jettisoning?
mustn't you have been jettisoning?
mustn't they have been jettisoning?