I can meliorate you can meliorate he can meliorate we can meliorate you can meliorate they can meliorate
V-ing form
I can be meliorating you can be meliorating he can be meliorating we can be meliorating you can be meliorating they can be meliorating
Perfect
I can have meliorated you can have meliorated he can have meliorated we can have meliorated you can have meliorated they can have meliorated
V-ing perfect
I can have been meliorating you can have been meliorating he can have been meliorating we can have been meliorating you can have been meliorating they can have been meliorating
Negation
Simple form
I cannot meliorate you cannot meliorate he cannot meliorate we cannot meliorate you cannot meliorate they cannot meliorate
V-ing form
I cannot be meliorating you cannot be meliorating he cannot be meliorating we cannot be meliorating you cannot be meliorating they cannot be meliorating
Perfect
I cannot have meliorated you cannot have meliorated he cannot have meliorated we cannot have meliorated you cannot have meliorated they cannot have meliorated
V-ing perfect
I cannot have been meliorating you cannot have been meliorating he cannot have been meliorating we cannot have been meliorating you cannot have been meliorating they cannot have been meliorating
Interrogative form
Simple form
can I meliorate? can you meliorate? can he meliorate? can we meliorate? can you meliorate? can they meliorate?
V-ing form
can I be meliorating? can you be meliorating? can he be meliorating? can we be meliorating? can you be meliorating? can they be meliorating?
Perfect
can I have meliorated? can you have meliorated? can he have meliorated? can we have meliorated? can you have meliorated? can they have meliorated?
V-ing perfect
can I have been meliorating? can you have been meliorating? can he have been meliorating? can we have been meliorating? can you have been meliorating? can they have been meliorating?
Interro-negative form
Simple form
can I not meliorate? can you not meliorate? can he not meliorate? can we not meliorate? can you not meliorate? can they not meliorate?
V-ing form
can I not be meliorating? can you not be meliorating? can he not be meliorating? can we not be meliorating? can you not be meliorating? can they not be meliorating?
Perfect
can I not have meliorated? can you not have meliorated? can he not have meliorated? can we not have meliorated? can you not have meliorated? can they not have meliorated?
V-ing perfect
can I not have been meliorating? can you not have been meliorating? can he not have been meliorating? can we not have been meliorating? can you not have been meliorating? can they not have been meliorating?