I can impoverish you can impoverish he can impoverish we can impoverish you can impoverish they can impoverish
V-ing form
I can be impoverishing you can be impoverishing he can be impoverishing we can be impoverishing you can be impoverishing they can be impoverishing
Perfect
I can have impoverished you can have impoverished he can have impoverished we can have impoverished you can have impoverished they can have impoverished
V-ing perfect
I can have been impoverishing you can have been impoverishing he can have been impoverishing we can have been impoverishing you can have been impoverishing they can have been impoverishing
Negation
Simple form
I can't impoverish you can't impoverish he can't impoverish we can't impoverish you can't impoverish they can't impoverish
V-ing form
I can't be impoverishing you can't be impoverishing he can't be impoverishing we can't be impoverishing you can't be impoverishing they can't be impoverishing
Perfect
I can't have impoverished you can't have impoverished he can't have impoverished we can't have impoverished you can't have impoverished they can't have impoverished
V-ing perfect
I can't have been impoverishing you can't have been impoverishing he can't have been impoverishing we can't have been impoverishing you can't have been impoverishing they can't have been impoverishing
Interrogative form
Simple form
can I impoverish? can you impoverish? can he impoverish? can we impoverish? can you impoverish? can they impoverish?
V-ing form
can I be impoverishing? can you be impoverishing? can he be impoverishing? can we be impoverishing? can you be impoverishing? can they be impoverishing?
Perfect
can I have impoverished? can you have impoverished? can he have impoverished? can we have impoverished? can you have impoverished? can they have impoverished?
V-ing perfect
can I have been impoverishing? can you have been impoverishing? can he have been impoverishing? can we have been impoverishing? can you have been impoverishing? can they have been impoverishing?
Interro-negative form
Simple form
can't I impoverish? can't you impoverish? can't he impoverish? can't we impoverish? can't you impoverish? can't they impoverish?
V-ing form
can't I be impoverishing? can't you be impoverishing? can't he be impoverishing? can't we be impoverishing? can't you be impoverishing? can't they be impoverishing?
Perfect
can't I have impoverished? can't you have impoverished? can't he have impoverished? can't we have impoverished? can't you have impoverished? can't they have impoverished?
V-ing perfect
can't I have been impoverishing? can't you have been impoverishing? can't he have been impoverishing? can't we have been impoverishing? can't you have been impoverishing? can't they have been impoverishing?