I can empty you can empty he can empty we can empty you can empty they can empty
V-ing form
I can be emptying you can be emptying he can be emptying we can be emptying you can be emptying they can be emptying
Perfect
I can have emptied you can have emptied he can have emptied we can have emptied you can have emptied they can have emptied
V-ing perfect
I can have been emptying you can have been emptying he can have been emptying we can have been emptying you can have been emptying they can have been emptying
Negation
Simple form
I can't empty you can't empty he can't empty we can't empty you can't empty they can't empty
V-ing form
I can't be emptying you can't be emptying he can't be emptying we can't be emptying you can't be emptying they can't be emptying
Perfect
I can't have emptied you can't have emptied he can't have emptied we can't have emptied you can't have emptied they can't have emptied
V-ing perfect
I can't have been emptying you can't have been emptying he can't have been emptying we can't have been emptying you can't have been emptying they can't have been emptying
Interrogative form
Simple form
can I empty? can you empty? can he empty? can we empty? can you empty? can they empty?
V-ing form
can I be emptying? can you be emptying? can he be emptying? can we be emptying? can you be emptying? can they be emptying?
Perfect
can I have emptied? can you have emptied? can he have emptied? can we have emptied? can you have emptied? can they have emptied?
V-ing perfect
can I have been emptying? can you have been emptying? can he have been emptying? can we have been emptying? can you have been emptying? can they have been emptying?
Interro-negative form
Simple form
can't I empty? can't you empty? can't he empty? can't we empty? can't you empty? can't they empty?
V-ing form
can't I be emptying? can't you be emptying? can't he be emptying? can't we be emptying? can't you be emptying? can't they be emptying?
Perfect
can't I have emptied? can't you have emptied? can't he have emptied? can't we have emptied? can't you have emptied? can't they have emptied?
V-ing perfect
can't I have been emptying? can't you have been emptying? can't he have been emptying? can't we have been emptying? can't you have been emptying? can't they have been emptying?