could nigh
Verbe régulier : nigh - nighed- nighed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could nigh
you could nigh
he could nigh
we could nigh
you could nigh
they could nigh 	I could be nighing
you could be nighing
he could be nighing
we could be nighing
you could be nighing
they could be nighing	I could have nighed
you could have nighed
he could have nighed
we could have nighed
you could have nighed
they could have nighed	I could have been nighing
you could have been nighing
he could have been nighing
we could have been nighing
you could have been nighing
they could have been nighing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't nigh
you couldn't nigh
he couldn't nigh
we couldn't nigh
you couldn't nigh
they couldn't nigh 	I couldn't be nighing
you couldn't be nighing
he couldn't be nighing
we couldn't be nighing
you couldn't be nighing
they couldn't be nighing	I couldn't have nighed
you couldn't have nighed
he couldn't have nighed
we couldn't have nighed
you couldn't have nighed
they couldn't have nighed	I couldn't have been nighing
you couldn't have been nighing
he couldn't have been nighing
we couldn't have been nighing
you couldn't have been nighing
they couldn't have been nighing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I nigh?
could you nigh?
could he nigh?
could we nigh?
could you nigh?
could they nigh? 	could I be nighing?
could you be nighing?
could he be nighing?
could we be nighing?
could you be nighing?
could they be nighing? 	could I have nighed?
could you have nighed?
could he have nighed?
could we have nighed?
could you have nighed?
could they have nighed? 	could I have been nighing?
could you have been nighing?
could he have been nighing?
could we have been nighing?
could you have been nighing?
could they have been nighing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I nigh?
couldn't you nigh?
couldn't he nigh?
couldn't we nigh?
couldn't you nigh?
couldn't they nigh? 	couldn't I be nighing?
couldn't you be nighing?
couldn't he be nighing?
couldn't we be nighing?
couldn't you be nighing?
couldn't they be nighing? 	couldn't I have nighed?
couldn't you have nighed?
couldn't he have nighed?
couldn't we have nighed?
couldn't you have nighed?
couldn't they have nighed? 	couldn't I have been nighing?
couldn't you have been nighing?
couldn't he have been nighing?
couldn't we have been nighing?
couldn't you have been nighing?
couldn't they have been nighing?