I must phony you must phony he must phony we must phony you must phony they must phony
V-ing form
I must be phonying you must be phonying he must be phonying we must be phonying you must be phonying they must be phonying
Perfect
I must have phonied you must have phonied he must have phonied we must have phonied you must have phonied they must have phonied
V-ing perfect
I must have been phonying you must have been phonying he must have been phonying we must have been phonying you must have been phonying they must have been phonying
Negation
Simple form
I mustn't phony you mustn't phony he mustn't phony we mustn't phony you mustn't phony they mustn't phony
V-ing form
I mustn't be phonying you mustn't be phonying he mustn't be phonying we mustn't be phonying you mustn't be phonying they mustn't be phonying
Perfect
I mustn't have phonied you mustn't have phonied he mustn't have phonied we mustn't have phonied you mustn't have phonied they mustn't have phonied
V-ing perfect
I mustn't have been phonying you mustn't have been phonying he mustn't have been phonying we mustn't have been phonying you mustn't have been phonying they mustn't have been phonying
Interrogative form
Simple form
must I phony? must you phony? must he phony? must we phony? must you phony? must they phony?
V-ing form
must I be phonying? must you be phonying? must he be phonying? must we be phonying? must you be phonying? must they be phonying?
Perfect
must I have phonied? must you have phonied? must he have phonied? must we have phonied? must you have phonied? must they have phonied?
V-ing perfect
must I have been phonying? must you have been phonying? must he have been phonying? must we have been phonying? must you have been phonying? must they have been phonying?
Interro-negative form
Simple form
mustn't I phony? mustn't you phony? mustn't he phony? mustn't we phony? mustn't you phony? mustn't they phony?
V-ing form
mustn't I be phonying? mustn't you be phonying? mustn't he be phonying? mustn't we be phonying? mustn't you be phonying? mustn't they be phonying?
Perfect
mustn't I have phonied? mustn't you have phonied? mustn't he have phonied? mustn't we have phonied? mustn't you have phonied? mustn't they have phonied?
V-ing perfect
mustn't I have been phonying? mustn't you have been phonying? mustn't he have been phonying? mustn't we have been phonying? mustn't you have been phonying? mustn't they have been phonying?