would concentrate
Regular verb: concentrate - concentrated- concentrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd concentrate
you'd concentrate
he'd concentrate
we'd concentrate
you'd concentrate
they'd concentrate 	I'd be concentrating
you'd be concentrating
he'd be concentrating
we'd be concentrating
you'd be concentrating
they'd be concentrating	I would've concentrated
you would've concentrated
he would've concentrated
we would've concentrated
you would've concentrated
they would've concentrated	I would've been concentrating
you would've been concentrating
he would've been concentrating
we would've been concentrating
you would've been concentrating
they would've been concentrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I wouldn't concentrate
you wouldn't concentrate
he wouldn't concentrate
we wouldn't concentrate
you wouldn't concentrate
they wouldn't concentrate 	I wouldn't be concentrating
you wouldn't be concentrating
he wouldn't be concentrating
we wouldn't be concentrating
you wouldn't be concentrating
they wouldn't be concentrating	I wouldn't have concentrated
you wouldn't have concentrated
he wouldn't have concentrated
we wouldn't have concentrated
you wouldn't have concentrated
they wouldn't have concentrated	I wouldn't have been concentrating
you wouldn't have been concentrating
he wouldn't have been concentrating
we wouldn't have been concentrating
you wouldn't have been concentrating
they wouldn't have been concentrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
would I concentrate?
would you concentrate?
would he concentrate?
would we concentrate?
would you concentrate?
would they concentrate? 	would I be concentrating?
would you be concentrating?
would he be concentrating?
would we be concentrating?
would you be concentrating?
would they be concentrating? 	would I have concentrated?
would you have concentrated?
would he have concentrated?
would we have concentrated?
would you have concentrated?
would they have concentrated? 	would I have been concentrating?
would you have been concentrating?
would he have been concentrating?
would we have been concentrating?
would you have been concentrating?
would they have been concentrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
wouldn't I concentrate?
wouldn't you concentrate?
wouldn't he concentrate?
wouldn't we concentrate?
wouldn't you concentrate?
wouldn't they concentrate? 	wouldn't I be concentrating?
wouldn't you be concentrating?
wouldn't he be concentrating?
wouldn't we be concentrating?
wouldn't you be concentrating?
wouldn't they be concentrating? 	wouldn't I have concentrated?
wouldn't you have concentrated?
wouldn't he have concentrated?
wouldn't we have concentrated?
wouldn't you have concentrated?
wouldn't they have concentrated? 	wouldn't I have been concentrating?
wouldn't you have been concentrating?
wouldn't he have been concentrating?
wouldn't we have been concentrating?
wouldn't you have been concentrating?
wouldn't they have been concentrating?