I can diminish you can diminish he can diminish we can diminish you can diminish they can diminish
V-ing form
I can be diminishing you can be diminishing he can be diminishing we can be diminishing you can be diminishing they can be diminishing
Perfect
I can have diminished you can have diminished he can have diminished we can have diminished you can have diminished they can have diminished
V-ing perfect
I can have been diminishing you can have been diminishing he can have been diminishing we can have been diminishing you can have been diminishing they can have been diminishing
Negation
Simple form
I can't diminish you can't diminish he can't diminish we can't diminish you can't diminish they can't diminish
V-ing form
I can't be diminishing you can't be diminishing he can't be diminishing we can't be diminishing you can't be diminishing they can't be diminishing
Perfect
I can't have diminished you can't have diminished he can't have diminished we can't have diminished you can't have diminished they can't have diminished
V-ing perfect
I can't have been diminishing you can't have been diminishing he can't have been diminishing we can't have been diminishing you can't have been diminishing they can't have been diminishing
Interrogative form
Simple form
can I diminish? can you diminish? can he diminish? can we diminish? can you diminish? can they diminish?
V-ing form
can I be diminishing? can you be diminishing? can he be diminishing? can we be diminishing? can you be diminishing? can they be diminishing?
Perfect
can I have diminished? can you have diminished? can he have diminished? can we have diminished? can you have diminished? can they have diminished?
V-ing perfect
can I have been diminishing? can you have been diminishing? can he have been diminishing? can we have been diminishing? can you have been diminishing? can they have been diminishing?
Interro-negative form
Simple form
can't I diminish? can't you diminish? can't he diminish? can't we diminish? can't you diminish? can't they diminish?
V-ing form
can't I be diminishing? can't you be diminishing? can't he be diminishing? can't we be diminishing? can't you be diminishing? can't they be diminishing?
Perfect
can't I have diminished? can't you have diminished? can't he have diminished? can't we have diminished? can't you have diminished? can't they have diminished?
V-ing perfect
can't I have been diminishing? can't you have been diminishing? can't he have been diminishing? can't we have been diminishing? can't you have been diminishing? can't they have been diminishing?