I can stupefy you can stupefy he can stupefy we can stupefy you can stupefy they can stupefy
V-ing form
I can be stupefying you can be stupefying he can be stupefying we can be stupefying you can be stupefying they can be stupefying
Perfect
I can have stupefied you can have stupefied he can have stupefied we can have stupefied you can have stupefied they can have stupefied
V-ing perfect
I can have been stupefying you can have been stupefying he can have been stupefying we can have been stupefying you can have been stupefying they can have been stupefying
Negation
Simple form
I cannot stupefy you cannot stupefy he cannot stupefy we cannot stupefy you cannot stupefy they cannot stupefy
V-ing form
I cannot be stupefying you cannot be stupefying he cannot be stupefying we cannot be stupefying you cannot be stupefying they cannot be stupefying
Perfect
I cannot have stupefied you cannot have stupefied he cannot have stupefied we cannot have stupefied you cannot have stupefied they cannot have stupefied
V-ing perfect
I cannot have been stupefying you cannot have been stupefying he cannot have been stupefying we cannot have been stupefying you cannot have been stupefying they cannot have been stupefying
Interrogative form
Simple form
can I stupefy? can you stupefy? can he stupefy? can we stupefy? can you stupefy? can they stupefy?
V-ing form
can I be stupefying? can you be stupefying? can he be stupefying? can we be stupefying? can you be stupefying? can they be stupefying?
Perfect
can I have stupefied? can you have stupefied? can he have stupefied? can we have stupefied? can you have stupefied? can they have stupefied?
V-ing perfect
can I have been stupefying? can you have been stupefying? can he have been stupefying? can we have been stupefying? can you have been stupefying? can they have been stupefying?
Interro-negative form
Simple form
can I not stupefy? can you not stupefy? can he not stupefy? can we not stupefy? can you not stupefy? can they not stupefy?
V-ing form
can I not be stupefying? can you not be stupefying? can he not be stupefying? can we not be stupefying? can you not be stupefying? can they not be stupefying?
Perfect
can I not have stupefied? can you not have stupefied? can he not have stupefied? can we not have stupefied? can you not have stupefied? can they not have stupefied?
V-ing perfect
can I not have been stupefying? can you not have been stupefying? can he not have been stupefying? can we not have been stupefying? can you not have been stupefying? can they not have been stupefying?