must deputise
Regular verb: deputise - deputised- deputised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must deputise
you must deputise
he must deputise
we must deputise
you must deputise
they must deputise 	I must be deputising
you must be deputising
he must be deputising
we must be deputising
you must be deputising
they must be deputising	I must have deputised
you must have deputised
he must have deputised
we must have deputised
you must have deputised
they must have deputised	I must have been deputising
you must have been deputising
he must have been deputising
we must have been deputising
you must have been deputising
they must have been deputising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't deputise
you mustn't deputise
he mustn't deputise
we mustn't deputise
you mustn't deputise
they mustn't deputise 	I mustn't be deputising
you mustn't be deputising
he mustn't be deputising
we mustn't be deputising
you mustn't be deputising
they mustn't be deputising	I mustn't have deputised
you mustn't have deputised
he mustn't have deputised
we mustn't have deputised
you mustn't have deputised
they mustn't have deputised	I mustn't have been deputising
you mustn't have been deputising
he mustn't have been deputising
we mustn't have been deputising
you mustn't have been deputising
they mustn't have been deputising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I deputise?
must you deputise?
must he deputise?
must we deputise?
must you deputise?
must they deputise? 	must I be deputising?
must you be deputising?
must he be deputising?
must we be deputising?
must you be deputising?
must they be deputising? 	must I have deputised?
must you have deputised?
must he have deputised?
must we have deputised?
must you have deputised?
must they have deputised? 	must I have been deputising?
must you have been deputising?
must he have been deputising?
must we have been deputising?
must you have been deputising?
must they have been deputising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I deputise?
mustn't you deputise?
mustn't he deputise?
mustn't we deputise?
mustn't you deputise?
mustn't they deputise? 	mustn't I be deputising?
mustn't you be deputising?
mustn't he be deputising?
mustn't we be deputising?
mustn't you be deputising?
mustn't they be deputising? 	mustn't I have deputised?
mustn't you have deputised?
mustn't he have deputised?
mustn't we have deputised?
mustn't you have deputised?
mustn't they have deputised? 	mustn't I have been deputising?
mustn't you have been deputising?
mustn't he have been deputising?
mustn't we have been deputising?
mustn't you have been deputising?
mustn't they have been deputising?