must deplane
Regular verb: deplane - deplaned- deplaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must deplane
you must deplane
he must deplane
we must deplane
you must deplane
they must deplane 	I must be deplaning
you must be deplaning
he must be deplaning
we must be deplaning
you must be deplaning
they must be deplaning	I must have deplaned
you must have deplaned
he must have deplaned
we must have deplaned
you must have deplaned
they must have deplaned	I must have been deplaning
you must have been deplaning
he must have been deplaning
we must have been deplaning
you must have been deplaning
they must have been deplaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't deplane
you mustn't deplane
he mustn't deplane
we mustn't deplane
you mustn't deplane
they mustn't deplane 	I mustn't be deplaning
you mustn't be deplaning
he mustn't be deplaning
we mustn't be deplaning
you mustn't be deplaning
they mustn't be deplaning	I mustn't have deplaned
you mustn't have deplaned
he mustn't have deplaned
we mustn't have deplaned
you mustn't have deplaned
they mustn't have deplaned	I mustn't have been deplaning
you mustn't have been deplaning
he mustn't have been deplaning
we mustn't have been deplaning
you mustn't have been deplaning
they mustn't have been deplaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I deplane?
must you deplane?
must he deplane?
must we deplane?
must you deplane?
must they deplane? 	must I be deplaning?
must you be deplaning?
must he be deplaning?
must we be deplaning?
must you be deplaning?
must they be deplaning? 	must I have deplaned?
must you have deplaned?
must he have deplaned?
must we have deplaned?
must you have deplaned?
must they have deplaned? 	must I have been deplaning?
must you have been deplaning?
must he have been deplaning?
must we have been deplaning?
must you have been deplaning?
must they have been deplaning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I deplane?
mustn't you deplane?
mustn't he deplane?
mustn't we deplane?
mustn't you deplane?
mustn't they deplane? 	mustn't I be deplaning?
mustn't you be deplaning?
mustn't he be deplaning?
mustn't we be deplaning?
mustn't you be deplaning?
mustn't they be deplaning? 	mustn't I have deplaned?
mustn't you have deplaned?
mustn't he have deplaned?
mustn't we have deplaned?
mustn't you have deplaned?
mustn't they have deplaned? 	mustn't I have been deplaning?
mustn't you have been deplaning?
mustn't he have been deplaning?
mustn't we have been deplaning?
mustn't you have been deplaning?
mustn't they have been deplaning?