English verb conjugation
COULD REVIEW

Regular verb: review - reviewed - reviewed

Affirmation

Simple form	V-ing form
I could review you could review he could review we could review you could review they could review	I could be reviewing you could be reviewing he could be reviewing we could be reviewing you could be reviewing they could be reviewing
Perfect	V-ing perfect
I could have reviewed you could have reviewed he could have reviewed we could have reviewed you could have reviewed they could have reviewed	I could have been reviewing you could have been reviewing he could have been reviewing we could have been reviewing you could have been reviewing they could have been reviewing

Negation

Simple form	V-ing form
I couldn't review you couldn't review he couldn't review we couldn't review you couldn't review they couldn't review	I couldn't be reviewing you couldn't be reviewing he couldn't be reviewing we couldn't be reviewing you couldn't be reviewing they couldn't be reviewing
Perfect	V-ing perfect
I couldn't have reviewed you couldn't have reviewed he couldn't have reviewed we couldn't have reviewed you couldn't have reviewed they couldn't have reviewed	I couldn't have been reviewing you couldn't have been reviewing he couldn't have been reviewing we couldn't have been reviewing you couldn't have been reviewing they couldn't have been reviewing

Interrogative form

Simple form	V-ing form
could I review? could you review? could he review? could we review? could you review? could they review?	could I be reviewing? could you be reviewing? could he be reviewing? could we be reviewing? could you be reviewing? could they be reviewing?
Perfect	V-ing perfect
could I have reviewed? could you have reviewed? could he have reviewed? could we have reviewed? could you have reviewed? could they have reviewed?	could I have been reviewing? could you have been reviewing? could he have been reviewing? could we have been reviewing? could you have been reviewing? could they have been reviewing?

Interro-negative form

Simple form	V-ing form
couldn't I review? couldn't you review? couldn't he review? couldn't we review? couldn't you review? couldn't they review?	couldn't I be reviewing? couldn't you be reviewing? couldn't he be reviewing? couldn't we be reviewing? couldn't you be reviewing? couldn't they be reviewing?
Perfect	V-ing perfect
couldn't I have reviewed? couldn't you have reviewed? couldn't he have reviewed? couldn't we have reviewed? couldn't you have reviewed? couldn't they have reviewed?	couldn't I have been reviewing? couldn't you have been reviewing? couldn't he have been reviewing? couldn't we have been reviewing? couldn't you have been reviewing? couldn't they have been reviewing?