could deconcentrate
Verbe régulier : deconcentrate - deconcentrated- deconcentrated

Affirmation 	
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I could deconcentrate
you could deconcentrate
he could deconcentrate
we could deconcentrate
you could deconcentrate
they could deconcentrate 	I could be deconcentrating
you could be deconcentrating
he could be deconcentrating
we could be deconcentrating
you could be deconcentrating
they could be deconcentrating	I could have deconcentrated
you could have deconcentrated
he could have deconcentrated
we could have deconcentrated
you could have deconcentrated
they could have deconcentrated	I could have been deconcentrating
you could have been deconcentrating
he could have been deconcentrating
we could have been deconcentrating
you could have been deconcentrating
they could have been deconcentrating	

Négation 	
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I couldn't deconcentrate
you couldn't deconcentrate
he couldn't deconcentrate
we couldn't deconcentrate
you couldn't deconcentrate
they couldn't deconcentrate 	I couldn't be deconcentrating
you couldn't be deconcentrating
he couldn't be deconcentrating
we couldn't be deconcentrating
you couldn't be deconcentrating
they couldn't be deconcentrating	I couldn't have deconcentrated
you couldn't have deconcentrated
he couldn't have deconcentrated
we couldn't have deconcentrated
you couldn't have deconcentrated
they couldn't have deconcentrated	I couldn't have been deconcentrating
you couldn't have been deconcentrating
he couldn't have been deconcentrating
we couldn't have been deconcentrating
you couldn't have been deconcentrating
they couldn't have been deconcentrating	

Forme interrogative 	
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could I deconcentrate?
could you deconcentrate?
could he deconcentrate?
could we deconcentrate?
could you deconcentrate?
could they deconcentrate? 	could I be deconcentrating?
could you be deconcentrating?
could he be deconcentrating?
could we be deconcentrating?
could you be deconcentrating?
could they be deconcentrating? 	could I have deconcentrated?
could you have deconcentrated?
could he have deconcentrated?
could we have deconcentrated?
could you have deconcentrated?
could they have deconcentrated? 	could I have been deconcentrating?
could you have been deconcentrating?
could he have been deconcentrating?
could we have been deconcentrating?
could you have been deconcentrating?
could they have been deconcentrating? 	

Forme interro-négative 	
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couldn't I deconcentrate?
couldn't you deconcentrate?
couldn't he deconcentrate?
couldn't we deconcentrate?
couldn't you deconcentrate?
couldn't they deconcentrate? 	couldn't I be deconcentrating?
couldn't you be deconcentrating?
couldn't he be deconcentrating?
couldn't we be deconcentrating?
couldn't you be deconcentrating?
couldn't they be deconcentrating? 	couldn't I have deconcentrated?
couldn't you have deconcentrated?
couldn't he have deconcentrated?
couldn't we have deconcentrated?
couldn't you have deconcentrated?
couldn't they have deconcentrated? 	couldn't I have been deconcentrating?
couldn't you have been deconcentrating?
couldn't he have been deconcentrating?
couldn't we have been deconcentrating?
couldn't you have been deconcentrating?
couldn't they have been deconcentrating?