must weight
Regular verb: weight - weighted- weighted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must weight
you must weight
she must weight
we must weight
you must weight
they must weight 	I must be weighting
you must be weighting
she must be weighting
we must be weighting
you must be weighting
they must be weighting	I must have weighted
you must have weighted
she 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
she 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
she 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
she 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
she 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
she 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 she weight?
must we weight?
must you weight?
must they weight? 	must I be weighting?
must you be weighting?
must she be weighting?
must we be weighting?
must you be weighting?
must they be weighting? 	must I have weighted?
must you have weighted?
must she 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 she 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 she 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 she 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 she 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 she have been weighting?
mustn't we have been weighting?
mustn't you have been weighting?
mustn't they have been weighting?