could lag
Verbe régulier : lag - lagged- lagged
Traduction française : rester en arrière - calori-fuger 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could lag
you could lag
he could lag
we could lag
you could lag
they could lag 	I could be lagging
you could be lagging
he could be lagging
we could be lagging
you could be lagging
they could be lagging	I could have lagged
you could have lagged
he could have lagged
we could have lagged
you could have lagged
they could have lagged	I could have been lagging
you could have been lagging
he could have been lagging
we could have been lagging
you could have been lagging
they could have been lagging	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not lag
you could not lag
he could not lag
we could not lag
you could not lag
they could not lag 	I could not be lagging
you could not be lagging
he could not be lagging
we could not be lagging
you could not be lagging
they could not be lagging	I could not have lagged
you could not have lagged
he could not have lagged
we could not have lagged
you could not have lagged
they could not have lagged	I could not have been lagging
you could not have been lagging
he could not have been lagging
we could not have been lagging
you could not have been lagging
they could not have been lagging	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I lag?
could you lag?
could he lag?
could we lag?
could you lag?
could they lag? 	could I be lagging?
could you be lagging?
could he be lagging?
could we be lagging?
could you be lagging?
could they be lagging? 	could I have lagged?
could you have lagged?
could he have lagged?
could we have lagged?
could you have lagged?
could they have lagged? 	could I have been lagging?
could you have been lagging?
could he have been lagging?
could we have been lagging?
could you have been lagging?
could they have been lagging? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not lag?
could you not lag?
could he not lag?
could we not lag?
could you not lag?
could they not lag? 	could I not be lagging?
could you not be lagging?
could he not be lagging?
could we not be lagging?
could you not be lagging?
could they not be lagging? 	could I not have lagged?
could you not have lagged?
could he not have lagged?
could we not have lagged?
could you not have lagged?
could they not have lagged? 	could I not have been lagging?
could you not have been lagging?
could he not have been lagging?
could we not have been lagging?
could you not have been lagging?
could they not have been lagging?