must supplant
Regular verb: supplant - supplanted- supplanted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must supplant
you must supplant
he must supplant
we must supplant
you must supplant
they must supplant 	I must be supplanting
you must be supplanting
he must be supplanting
we must be supplanting
you must be supplanting
they must be supplanting	I must have supplanted
you must have supplanted
he must have supplanted
we must have supplanted
you must have supplanted
they must have supplanted	I must have been supplanting
you must have been supplanting
he must have been supplanting
we must have been supplanting
you must have been supplanting
they must have been supplanting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't supplant
you mustn't supplant
he mustn't supplant
we mustn't supplant
you mustn't supplant
they mustn't supplant 	I mustn't be supplanting
you mustn't be supplanting
he mustn't be supplanting
we mustn't be supplanting
you mustn't be supplanting
they mustn't be supplanting	I mustn't have supplanted
you mustn't have supplanted
he mustn't have supplanted
we mustn't have supplanted
you mustn't have supplanted
they mustn't have supplanted	I mustn't have been supplanting
you mustn't have been supplanting
he mustn't have been supplanting
we mustn't have been supplanting
you mustn't have been supplanting
they mustn't have been supplanting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I supplant?
must you supplant?
must he supplant?
must we supplant?
must you supplant?
must they supplant? 	must I be supplanting?
must you be supplanting?
must he be supplanting?
must we be supplanting?
must you be supplanting?
must they be supplanting? 	must I have supplanted?
must you have supplanted?
must he have supplanted?
must we have supplanted?
must you have supplanted?
must they have supplanted? 	must I have been supplanting?
must you have been supplanting?
must he have been supplanting?
must we have been supplanting?
must you have been supplanting?
must they have been supplanting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I supplant?
mustn't you supplant?
mustn't he supplant?
mustn't we supplant?
mustn't you supplant?
mustn't they supplant? 	mustn't I be supplanting?
mustn't you be supplanting?
mustn't he be supplanting?
mustn't we be supplanting?
mustn't you be supplanting?
mustn't they be supplanting? 	mustn't I have supplanted?
mustn't you have supplanted?
mustn't he have supplanted?
mustn't we have supplanted?
mustn't you have supplanted?
mustn't they have supplanted? 	mustn't I have been supplanting?
mustn't you have been supplanting?
mustn't he have been supplanting?
mustn't we have been supplanting?
mustn't you have been supplanting?
mustn't they have been supplanting?