English verb conjugation
COULD REPROVE

Regular verb: reprove - reproved - reproved

Affirmation

Simple form	V-ing form
I could reprove you could reprove he could reprove we could reprove you could reprove they could reprove	I could be reproving you could be reproving he 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 he 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 he 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 could not reprove you could not reprove he could not reprove we could not reprove you could not reprove they could not reprove	I could not be reproving you could not be reproving he could not be reproving we could not be reproving you could not be reproving they could not be reproving
Perfect	V-ing perfect
I could not have reproved you could not have reproved he could not have reproved we could not have reproved you could not have reproved they could not have reproved	I could not have been reproving you could not have been reproving he could not have been reproving we could not have been reproving you could not have been reproving they could not have been reproving

Interrogative form

Simple form	V-ing form
could I reprove? could you reprove? could he reprove? could we reprove? could you reprove? could they reprove?	could I be reproving? could you be reproving? could he 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 he 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 he 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
could I not reprove? could you not reprove? could he not reprove? could we not reprove? could you not reprove? could they not reprove?	could I not be reproving? could you not be reproving? could he not be reproving? could we not be reproving? could you not be reproving? could they not be reproving?
Perfect	V-ing perfect
could I not have reproved? could you not have reproved? could he not have reproved? could we not have reproved? could you not have reproved? could they not have reproved?	could I not have been reproving? could you not have been reproving? could he not have been reproving? could we not have been reproving? could you not have been reproving? could they not have been reproving?