must reward
Regular verb: reward - rewarded- rewarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must reward
you must reward
he must reward
we must reward
you must reward
they must reward 	I must be rewarding
you must be rewarding
he must be rewarding
we must be rewarding
you must be rewarding
they must be rewarding	I must have rewarded
you must have rewarded
he must have rewarded
we must have rewarded
you must have rewarded
they must have rewarded	I must have been rewarding
you must have been rewarding
he must have been rewarding
we must have been rewarding
you must have been rewarding
they must have been rewarding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't reward
you mustn't reward
he mustn't reward
we mustn't reward
you mustn't reward
they mustn't reward 	I mustn't be rewarding
you mustn't be rewarding
he mustn't be rewarding
we mustn't be rewarding
you mustn't be rewarding
they mustn't be rewarding	I mustn't have rewarded
you mustn't have rewarded
he mustn't have rewarded
we mustn't have rewarded
you mustn't have rewarded
they mustn't have rewarded	I mustn't have been rewarding
you mustn't have been rewarding
he mustn't have been rewarding
we mustn't have been rewarding
you mustn't have been rewarding
they mustn't have been rewarding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I reward?
must you reward?
must he reward?
must we reward?
must you reward?
must they reward? 	must I be rewarding?
must you be rewarding?
must he be rewarding?
must we be rewarding?
must you be rewarding?
must they be rewarding? 	must I have rewarded?
must you have rewarded?
must he have rewarded?
must we have rewarded?
must you have rewarded?
must they have rewarded? 	must I have been rewarding?
must you have been rewarding?
must he have been rewarding?
must we have been rewarding?
must you have been rewarding?
must they have been rewarding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I reward?
mustn't you reward?
mustn't he reward?
mustn't we reward?
mustn't you reward?
mustn't they reward? 	mustn't I be rewarding?
mustn't you be rewarding?
mustn't he be rewarding?
mustn't we be rewarding?
mustn't you be rewarding?
mustn't they be rewarding? 	mustn't I have rewarded?
mustn't you have rewarded?
mustn't he have rewarded?
mustn't we have rewarded?
mustn't you have rewarded?
mustn't they have rewarded? 	mustn't I have been rewarding?
mustn't you have been rewarding?
mustn't he have been rewarding?
mustn't we have been rewarding?
mustn't you have been rewarding?
mustn't they have been rewarding?