must weight
Regular verb: weight - weighted- weighted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must weight
you must weight
he must weight
we must weight
you must weight
they must weight 	I must be weighting
you must be weighting
he must be weighting
we must be weighting
you must be weighting
they must be weighting	I must have weighted
you must have weighted
he must have weighted
we must have weighted
you must have weighted
they must have weighted	I must have been weighting
you must have been weighting
he must have been weighting
we must have been weighting
you must have been weighting
they must have been weighting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't weight
you mustn't weight
he mustn't weight
we mustn't weight
you mustn't weight
they mustn't weight 	I mustn't be weighting
you mustn't be weighting
he mustn't be weighting
we mustn't be weighting
you mustn't be weighting
they mustn't be weighting	I mustn't have weighted
you mustn't have weighted
he mustn't have weighted
we mustn't have weighted
you mustn't have weighted
they mustn't have weighted	I mustn't have been weighting
you mustn't have been weighting
he mustn't have been weighting
we mustn't have been weighting
you mustn't have been weighting
they mustn't have been weighting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I weight?
must you weight?
must he weight?
must we weight?
must you weight?
must they weight? 	must I be weighting?
must you be weighting?
must he be weighting?
must we be weighting?
must you be weighting?
must they be weighting? 	must I have weighted?
must you have weighted?
must he have weighted?
must we have weighted?
must you have weighted?
must they have weighted? 	must I have been weighting?
must you have been weighting?
must he have been weighting?
must we have been weighting?
must you have been weighting?
must they have been weighting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I weight?
mustn't you weight?
mustn't he weight?
mustn't we weight?
mustn't you weight?
mustn't they weight? 	mustn't I be weighting?
mustn't you be weighting?
mustn't he be weighting?
mustn't we be weighting?
mustn't you be weighting?
mustn't they be weighting? 	mustn't I have weighted?
mustn't you have weighted?
mustn't he have weighted?
mustn't we have weighted?
mustn't you have weighted?
mustn't they have weighted? 	mustn't I have been weighting?
mustn't you have been weighting?
mustn't he have been weighting?
mustn't we have been weighting?
mustn't you have been weighting?
mustn't they have been weighting?