must calm
Regular verb: calm - calmed- calmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must calm
you must calm
she must calm
we must calm
you must calm
they must calm 	I must be calming
you must be calming
she must be calming
we must be calming
you must be calming
they must be calming	I must have calmed
you must have calmed
she must have calmed
we must have calmed
you must have calmed
they must have calmed	I must have been calming
you must have been calming
she must have been calming
we must have been calming
you must have been calming
they must have been calming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't calm
you mustn't calm
she mustn't calm
we mustn't calm
you mustn't calm
they mustn't calm 	I mustn't be calming
you mustn't be calming
she mustn't be calming
we mustn't be calming
you mustn't be calming
they mustn't be calming	I mustn't have calmed
you mustn't have calmed
she mustn't have calmed
we mustn't have calmed
you mustn't have calmed
they mustn't have calmed	I mustn't have been calming
you mustn't have been calming
she mustn't have been calming
we mustn't have been calming
you mustn't have been calming
they mustn't have been calming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I calm?
must you calm?
must she calm?
must we calm?
must you calm?
must they calm? 	must I be calming?
must you be calming?
must she be calming?
must we be calming?
must you be calming?
must they be calming? 	must I have calmed?
must you have calmed?
must she have calmed?
must we have calmed?
must you have calmed?
must they have calmed? 	must I have been calming?
must you have been calming?
must she have been calming?
must we have been calming?
must you have been calming?
must they have been calming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I calm?
mustn't you calm?
mustn't she calm?
mustn't we calm?
mustn't you calm?
mustn't they calm? 	mustn't I be calming?
mustn't you be calming?
mustn't she be calming?
mustn't we be calming?
mustn't you be calming?
mustn't they be calming? 	mustn't I have calmed?
mustn't you have calmed?
mustn't she have calmed?
mustn't we have calmed?
mustn't you have calmed?
mustn't they have calmed? 	mustn't I have been calming?
mustn't you have been calming?
mustn't she have been calming?
mustn't we have been calming?
mustn't you have been calming?
mustn't they have been calming?