could overconcentrate
Regular verb: overconcentrate - overconcentrated- overconcentrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overconcentrate
you could overconcentrate
he could overconcentrate
we could overconcentrate
you could overconcentrate
they could overconcentrate 	I could be overconcentrating
you could be overconcentrating
he could be overconcentrating
we could be overconcentrating
you could be overconcentrating
they could be overconcentrating	I could have overconcentrated
you could have overconcentrated
he could have overconcentrated
we could have overconcentrated
you could have overconcentrated
they could have overconcentrated	I could have been overconcentrating
you could have been overconcentrating
he could have been overconcentrating
we could have been overconcentrating
you could have been overconcentrating
they could have been overconcentrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not overconcentrate
you could not overconcentrate
he could not overconcentrate
we could not overconcentrate
you could not overconcentrate
they could not overconcentrate 	I could not be overconcentrating
you could not be overconcentrating
he could not be overconcentrating
we could not be overconcentrating
you could not be overconcentrating
they could not be overconcentrating	I could not have overconcentrated
you could not have overconcentrated
he could not have overconcentrated
we could not have overconcentrated
you could not have overconcentrated
they could not have overconcentrated	I could not have been overconcentrating
you could not have been overconcentrating
he could not have been overconcentrating
we could not have been overconcentrating
you could not have been overconcentrating
they could not have been overconcentrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overconcentrate?
could you overconcentrate?
could he overconcentrate?
could we overconcentrate?
could you overconcentrate?
could they overconcentrate? 	could I be overconcentrating?
could you be overconcentrating?
could he be overconcentrating?
could we be overconcentrating?
could you be overconcentrating?
could they be overconcentrating? 	could I have overconcentrated?
could you have overconcentrated?
could he have overconcentrated?
could we have overconcentrated?
could you have overconcentrated?
could they have overconcentrated? 	could I have been overconcentrating?
could you have been overconcentrating?
could he have been overconcentrating?
could we have been overconcentrating?
could you have been overconcentrating?
could they have been overconcentrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not overconcentrate?
could you not overconcentrate?
could he not overconcentrate?
could we not overconcentrate?
could you not overconcentrate?
could they not overconcentrate? 	could I not be overconcentrating?
could you not be overconcentrating?
could he not be overconcentrating?
could we not be overconcentrating?
could you not be overconcentrating?
could they not be overconcentrating? 	could I not have overconcentrated?
could you not have overconcentrated?
could he not have overconcentrated?
could we not have overconcentrated?
could you not have overconcentrated?
could they not have overconcentrated? 	could I not have been overconcentrating?
could you not have been overconcentrating?
could he not have been overconcentrating?
could we not have been overconcentrating?
could you not have been overconcentrating?
could they not have been overconcentrating?