could review
Regular verb: review - reviewed- reviewed

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