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 can't stupefy you can't stupefy he can't stupefy we can't stupefy you can't stupefy they can't stupefy
V-ing form
I can't be stupefying you can't be stupefying he can't be stupefying we can't be stupefying you can't be stupefying they can't be stupefying
Perfect
I can't have stupefied you can't have stupefied he can't have stupefied we can't have stupefied you can't have stupefied they can't have stupefied
V-ing perfect
I can't have been stupefying you can't have been stupefying he can't have been stupefying we can't have been stupefying you can't have been stupefying they can't 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't I stupefy? can't you stupefy? can't he stupefy? can't we stupefy? can't you stupefy? can't they stupefy?
V-ing form
can't I be stupefying? can't you be stupefying? can't he be stupefying? can't we be stupefying? can't you be stupefying? can't they be stupefying?
Perfect
can't I have stupefied? can't you have stupefied? can't he have stupefied? can't we have stupefied? can't you have stupefied? can't they have stupefied?
V-ing perfect
can't I have been stupefying? can't you have been stupefying? can't he have been stupefying? can't we have been stupefying? can't you have been stupefying? can't they have been stupefying?