I can candy you can candy he can candy we can candy you can candy they can candy
V-ing form
I can be candying you can be candying he can be candying we can be candying you can be candying they can be candying
Perfect
I can have candied you can have candied he can have candied we can have candied you can have candied they can have candied
V-ing perfect
I can have been candying you can have been candying he can have been candying we can have been candying you can have been candying they can have been candying
Negation
Simple form
I can't candy you can't candy he can't candy we can't candy you can't candy they can't candy
V-ing form
I can't be candying you can't be candying he can't be candying we can't be candying you can't be candying they can't be candying
Perfect
I can't have candied you can't have candied he can't have candied we can't have candied you can't have candied they can't have candied
V-ing perfect
I can't have been candying you can't have been candying he can't have been candying we can't have been candying you can't have been candying they can't have been candying
Interrogative form
Simple form
can I candy? can you candy? can he candy? can we candy? can you candy? can they candy?
V-ing form
can I be candying? can you be candying? can he be candying? can we be candying? can you be candying? can they be candying?
Perfect
can I have candied? can you have candied? can he have candied? can we have candied? can you have candied? can they have candied?
V-ing perfect
can I have been candying? can you have been candying? can he have been candying? can we have been candying? can you have been candying? can they have been candying?
Interro-negative form
Simple form
can't I candy? can't you candy? can't he candy? can't we candy? can't you candy? can't they candy?
V-ing form
can't I be candying? can't you be candying? can't he be candying? can't we be candying? can't you be candying? can't they be candying?
Perfect
can't I have candied? can't you have candied? can't he have candied? can't we have candied? can't you have candied? can't they have candied?
V-ing perfect
can't I have been candying? can't you have been candying? can't he have been candying? can't we have been candying? can't you have been candying? can't they have been candying?