English verb conjugation
COULD REPROVE

Regular verb: reprove - reproved - reproved

Affirmation

Simple form	V-ing form
I could reprove you could reprove she could reprove we could reprove you could reprove they could reprove	I could be reproving you could be reproving she could be reproving we could be reproving you could be reproving they could be reproving
Perfect	V-ing perfect
I could have reproved you could have reproved she could have reproved we could have reproved you could have reproved they could have reproved	I could have been reproving you could have been reproving she could have been reproving we could have been reproving you could have been reproving they could have been reproving

Negation

Simple form	V-ing form
I couldn't reprove you couldn't reprove she couldn't reprove we couldn't reprove you couldn't reprove they couldn't reprove	I couldn't be reproving you couldn't be reproving she couldn't be reproving we couldn't be reproving you couldn't be reproving they couldn't be reproving
Perfect	V-ing perfect
I couldn't have reproved you couldn't have reproved she couldn't have reproved we couldn't have reproved you couldn't have reproved they couldn't have reproved	I couldn't have been reproving you couldn't have been reproving she couldn't have been reproving we couldn't have been reproving you couldn't have been reproving they couldn't have been reproving

Interrogative form

Simple form	V-ing form
could I reprove? could you reprove? could she reprove? could we reprove? could you reprove? could they reprove?	could I be reproving? could you be reproving? could she be reproving? could we be reproving? could you be reproving? could they be reproving?
Perfect	V-ing perfect
could I have reproved? could you have reproved? could she have reproved? could we have reproved? could you have reproved? could they have reproved?	could I have been reproving? could you have been reproving? could she have been reproving? could we have been reproving? could you have been reproving? could they have been reproving?

Interro-negative form

Simple form	V-ing form
couldn't I reprove? couldn't you reprove? couldn't she reprove? couldn't we reprove? couldn't you reprove? couldn't they reprove?	couldn't I be reproving? couldn't you be reproving? couldn't she be reproving? couldn't we be reproving? couldn't you be reproving? couldn't they be reproving?
Perfect	V-ing perfect
couldn't I have reproved? couldn't you have reproved? couldn't she have reproved? couldn't we have reproved? couldn't you have reproved? couldn't they have reproved?	couldn't I have been reproving? couldn't you have been reproving? couldn't she have been reproving? couldn't we have been reproving? couldn't you have been reproving? couldn't they have been reproving?