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