I can envy you can envy he can envy we can envy you can envy they can envy
V-ing form
I can be envying you can be envying he can be envying we can be envying you can be envying they can be envying
Perfect
I can have envied you can have envied he can have envied we can have envied you can have envied they can have envied
V-ing perfect
I can have been envying you can have been envying he can have been envying we can have been envying you can have been envying they can have been envying
Negation
Simple form
I can't envy you can't envy he can't envy we can't envy you can't envy they can't envy
V-ing form
I can't be envying you can't be envying he can't be envying we can't be envying you can't be envying they can't be envying
Perfect
I can't have envied you can't have envied he can't have envied we can't have envied you can't have envied they can't have envied
V-ing perfect
I can't have been envying you can't have been envying he can't have been envying we can't have been envying you can't have been envying they can't have been envying
Interrogative form
Simple form
can I envy? can you envy? can he envy? can we envy? can you envy? can they envy?
V-ing form
can I be envying? can you be envying? can he be envying? can we be envying? can you be envying? can they be envying?
Perfect
can I have envied? can you have envied? can he have envied? can we have envied? can you have envied? can they have envied?
V-ing perfect
can I have been envying? can you have been envying? can he have been envying? can we have been envying? can you have been envying? can they have been envying?
Interro-negative form
Simple form
can't I envy? can't you envy? can't he envy? can't we envy? can't you envy? can't they envy?
V-ing form
can't I be envying? can't you be envying? can't he be envying? can't we be envying? can't you be envying? can't they be envying?
Perfect
can't I have envied? can't you have envied? can't he have envied? can't we have envied? can't you have envied? can't they have envied?
V-ing perfect
can't I have been envying? can't you have been envying? can't he have been envying? can't we have been envying? can't you have been envying? can't they have been envying?