I can meliorate you can meliorate she can meliorate we can meliorate you can meliorate they can meliorate
V-ing form
I can be meliorating you can be meliorating she can be meliorating we can be meliorating you can be meliorating they can be meliorating
Perfect
I can have meliorated you can have meliorated she 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 she can have been meliorating we can have been meliorating you can have been meliorating they can have been meliorating
Negation
Simple form
I can't meliorate you can't meliorate she can't meliorate we can't meliorate you can't meliorate they can't meliorate
V-ing form
I can't be meliorating you can't be meliorating she can't be meliorating we can't be meliorating you can't be meliorating they can't be meliorating
Perfect
I can't have meliorated you can't have meliorated she can't have meliorated we can't have meliorated you can't have meliorated they can't have meliorated
V-ing perfect
I can't have been meliorating you can't have been meliorating she can't have been meliorating we can't have been meliorating you can't have been meliorating they can't have been meliorating
Interrogative form
Simple form
can I meliorate? can you meliorate? can she meliorate? can we meliorate? can you meliorate? can they meliorate?
V-ing form
can I be meliorating? can you be meliorating? can she be meliorating? can we be meliorating? can you be meliorating? can they be meliorating?
Perfect
can I have meliorated? can you have meliorated? can she 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 she have been meliorating? can we have been meliorating? can you have been meliorating? can they have been meliorating?
Interro-negative form
Simple form
can't I meliorate? can't you meliorate? can't she meliorate? can't we meliorate? can't you meliorate? can't they meliorate?
V-ing form
can't I be meliorating? can't you be meliorating? can't she be meliorating? can't we be meliorating? can't you be meliorating? can't they be meliorating?
Perfect
can't I have meliorated? can't you have meliorated? can't she have meliorated? can't we have meliorated? can't you have meliorated? can't they have meliorated?
V-ing perfect
can't I have been meliorating? can't you have been meliorating? can't she have been meliorating? can't we have been meliorating? can't you have been meliorating? can't they have been meliorating?