must relace
Regular verb: relace - relaced- relaced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must relace
you must relace
he must relace
we must relace
you must relace
they must relace 	I must be relacing
you must be relacing
he must be relacing
we must be relacing
you must be relacing
they must be relacing	I must have relaced
you must have relaced
he must have relaced
we must have relaced
you must have relaced
they must have relaced	I must have been relacing
you must have been relacing
he must have been relacing
we must have been relacing
you must have been relacing
they must have been relacing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't relace
you mustn't relace
he mustn't relace
we mustn't relace
you mustn't relace
they mustn't relace 	I mustn't be relacing
you mustn't be relacing
he mustn't be relacing
we mustn't be relacing
you mustn't be relacing
they mustn't be relacing	I mustn't have relaced
you mustn't have relaced
he mustn't have relaced
we mustn't have relaced
you mustn't have relaced
they mustn't have relaced	I mustn't have been relacing
you mustn't have been relacing
he mustn't have been relacing
we mustn't have been relacing
you mustn't have been relacing
they mustn't have been relacing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I relace?
must you relace?
must he relace?
must we relace?
must you relace?
must they relace? 	must I be relacing?
must you be relacing?
must he be relacing?
must we be relacing?
must you be relacing?
must they be relacing? 	must I have relaced?
must you have relaced?
must he have relaced?
must we have relaced?
must you have relaced?
must they have relaced? 	must I have been relacing?
must you have been relacing?
must he have been relacing?
must we have been relacing?
must you have been relacing?
must they have been relacing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I relace?
mustn't you relace?
mustn't he relace?
mustn't we relace?
mustn't you relace?
mustn't they relace? 	mustn't I be relacing?
mustn't you be relacing?
mustn't he be relacing?
mustn't we be relacing?
mustn't you be relacing?
mustn't they be relacing? 	mustn't I have relaced?
mustn't you have relaced?
mustn't he have relaced?
mustn't we have relaced?
mustn't you have relaced?
mustn't they have relaced? 	mustn't I have been relacing?
mustn't you have been relacing?
mustn't he have been relacing?
mustn't we have been relacing?
mustn't you have been relacing?
mustn't they have been relacing?