English verb conjugation
COULD MELIORATE

Regular verb: meliorate - meliorated - meliorated

Affirmation

Simple form	V-ing form
I could meliorate you could meliorate he could meliorate we could meliorate you could meliorate they could meliorate	I could be meliorating you could be meliorating he could be meliorating we could be meliorating you could be meliorating they could be meliorating
Perfect	V-ing perfect
I could have meliorated you could have meliorated he could have meliorated we could have meliorated you could have meliorated they could have meliorated	I could have been meliorating you could have been meliorating he could have been meliorating we could have been meliorating you could have been meliorating they could have been meliorating

Negation

Simple form	V-ing form
I couldn't meliorate you couldn't meliorate he couldn't meliorate we couldn't meliorate you couldn't meliorate they couldn't meliorate	I couldn't be meliorating you couldn't be meliorating he couldn't be meliorating we couldn't be meliorating you couldn't be meliorating they couldn't be meliorating
Perfect	V-ing perfect
I couldn't have meliorated you couldn't have meliorated he couldn't have meliorated we couldn't have meliorated you couldn't have meliorated they couldn't have meliorated	I couldn't have been meliorating you couldn't have been meliorating he couldn't have been meliorating we couldn't have been meliorating you couldn't have been meliorating they couldn't have been meliorating

Interrogative form

Simple form	V-ing form
could I meliorate? could you meliorate? could he meliorate? could we meliorate? could you meliorate? could they meliorate?	could I be meliorating? could you be meliorating? could he be meliorating? could we be meliorating? could you be meliorating? could they be meliorating?
Perfect	V-ing perfect
could I have meliorated? could you have meliorated? could he have meliorated? could we have meliorated? could you have meliorated? could they have meliorated?	could I have been meliorating? could you have been meliorating? could he have been meliorating? could we have been meliorating? could you have been meliorating? could they have been meliorating?

Interro-negative form

Simple form	V-ing form
couldn't I meliorate? couldn't you meliorate? couldn't he meliorate? couldn't we meliorate? couldn't you meliorate? couldn't they meliorate?	couldn't I be meliorating? couldn't you be meliorating? couldn't he be meliorating? couldn't we be meliorating? couldn't you be meliorating? couldn't they be meliorating?
Perfect	V-ing perfect
couldn't I have meliorated? couldn't you have meliorated? couldn't he have meliorated? couldn't we have meliorated? couldn't you have meliorated? couldn't they have meliorated?	couldn't I have been meliorating? couldn't you have been meliorating? couldn't he have been meliorating? couldn't we have been meliorating? couldn't you have been meliorating? couldn't they have been meliorating?