could nigh
Verbo regular: nigh - nighed- nighed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could nigh
you could nigh
she could nigh
we could nigh
you could nigh
they could nigh 	I could be nighing
you could be nighing
she could be nighing
we could be nighing
you could be nighing
they could be nighing	I could have nighed
you could have nighed
she 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
she could have been nighing
we could have been nighing
you could have been nighing
they could have been nighing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't nigh
you couldn't nigh
she 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
she 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
she 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
she couldn't have been nighing
we couldn't have been nighing
you couldn't have been nighing
they couldn't have been nighing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I nigh?
could you nigh?
could she nigh?
could we nigh?
could you nigh?
could they nigh? 	could I be nighing?
could you be nighing?
could she be nighing?
could we be nighing?
could you be nighing?
could they be nighing? 	could I have nighed?
could you have nighed?
could she 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 she have been nighing?
could we have been nighing?
could you have been nighing?
could they have been nighing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I nigh?
couldn't you nigh?
couldn't she 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 she 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 she 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 she have been nighing?
couldn't we have been nighing?
couldn't you have been nighing?
couldn't they have been nighing?