must value
Regular verb: value - valued- valued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must value
you must value
he must value
we must value
you must value
they must value 	I must be valuing
you must be valuing
he must be valuing
we must be valuing
you must be valuing
they must be valuing	I must have valued
you must have valued
he must have valued
we must have valued
you must have valued
they must have valued	I must have been valuing
you must have been valuing
he must have been valuing
we must have been valuing
you must have been valuing
they must have been valuing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't value
you mustn't value
he mustn't value
we mustn't value
you mustn't value
they mustn't value 	I mustn't be valuing
you mustn't be valuing
he mustn't be valuing
we mustn't be valuing
you mustn't be valuing
they mustn't be valuing	I mustn't have valued
you mustn't have valued
he mustn't have valued
we mustn't have valued
you mustn't have valued
they mustn't have valued	I mustn't have been valuing
you mustn't have been valuing
he mustn't have been valuing
we mustn't have been valuing
you mustn't have been valuing
they mustn't have been valuing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I value?
must you value?
must he value?
must we value?
must you value?
must they value? 	must I be valuing?
must you be valuing?
must he be valuing?
must we be valuing?
must you be valuing?
must they be valuing? 	must I have valued?
must you have valued?
must he have valued?
must we have valued?
must you have valued?
must they have valued? 	must I have been valuing?
must you have been valuing?
must he have been valuing?
must we have been valuing?
must you have been valuing?
must they have been valuing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I value?
mustn't you value?
mustn't he value?
mustn't we value?
mustn't you value?
mustn't they value? 	mustn't I be valuing?
mustn't you be valuing?
mustn't he be valuing?
mustn't we be valuing?
mustn't you be valuing?
mustn't they be valuing? 	mustn't I have valued?
mustn't you have valued?
mustn't he have valued?
mustn't we have valued?
mustn't you have valued?
mustn't they have valued? 	mustn't I have been valuing?
mustn't you have been valuing?
mustn't he have been valuing?
mustn't we have been valuing?
mustn't you have been valuing?
mustn't they have been valuing?