can nigh
Regular verb: nigh - nighed- nighed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can nigh
you can nigh
she can nigh
we can nigh
you can nigh
they can nigh 	I can be nighing
you can be nighing
she can be nighing
we can be nighing
you can be nighing
they can be nighing	I can have nighed
you can have nighed
she can have nighed
we can have nighed
you can have nighed
they can have nighed	I can have been nighing
you can have been nighing
she can have been nighing
we can have been nighing
you can have been nighing
they can have been nighing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't nigh
you can't nigh
she can't nigh
we can't nigh
you can't nigh
they can't nigh 	I can't be nighing
you can't be nighing
she can't be nighing
we can't be nighing
you can't be nighing
they can't be nighing	I can't have nighed
you can't have nighed
she can't have nighed
we can't have nighed
you can't have nighed
they can't have nighed	I can't have been nighing
you can't have been nighing
she can't have been nighing
we can't have been nighing
you can't have been nighing
they can't have been nighing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I nigh?
can you nigh?
can she nigh?
can we nigh?
can you nigh?
can they nigh? 	can I be nighing?
can you be nighing?
can she be nighing?
can we be nighing?
can you be nighing?
can they be nighing? 	can I have nighed?
can you have nighed?
can she have nighed?
can we have nighed?
can you have nighed?
can they have nighed? 	can I have been nighing?
can you have been nighing?
can she have been nighing?
can we have been nighing?
can you have been nighing?
can they have been nighing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I nigh?
can't you nigh?
can't she nigh?
can't we nigh?
can't you nigh?
can't they nigh? 	can't I be nighing?
can't you be nighing?
can't she be nighing?
can't we be nighing?
can't you be nighing?
can't they be nighing? 	can't I have nighed?
can't you have nighed?
can't she have nighed?
can't we have nighed?
can't you have nighed?
can't they have nighed? 	can't I have been nighing?
can't you have been nighing?
can't she have been nighing?
can't we have been nighing?
can't you have been nighing?
can't they have been nighing?