could neigh
Regular verb: neigh - neighed- neighed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could neigh
you could neigh
she could neigh
we could neigh
you could neigh
they could neigh 	I could be neighing
you could be neighing
she could be neighing
we could be neighing
you could be neighing
they could be neighing	I could have neighed
you could have neighed
she could have neighed
we could have neighed
you could have neighed
they could have neighed	I could have been neighing
you could have been neighing
she could have been neighing
we could have been neighing
you could have been neighing
they could have been neighing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't neigh
you couldn't neigh
she couldn't neigh
we couldn't neigh
you couldn't neigh
they couldn't neigh 	I couldn't be neighing
you couldn't be neighing
she couldn't be neighing
we couldn't be neighing
you couldn't be neighing
they couldn't be neighing	I couldn't have neighed
you couldn't have neighed
she couldn't have neighed
we couldn't have neighed
you couldn't have neighed
they couldn't have neighed	I couldn't have been neighing
you couldn't have been neighing
she couldn't have been neighing
we couldn't have been neighing
you couldn't have been neighing
they couldn't have been neighing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I neigh?
could you neigh?
could she neigh?
could we neigh?
could you neigh?
could they neigh? 	could I be neighing?
could you be neighing?
could she be neighing?
could we be neighing?
could you be neighing?
could they be neighing? 	could I have neighed?
could you have neighed?
could she have neighed?
could we have neighed?
could you have neighed?
could they have neighed? 	could I have been neighing?
could you have been neighing?
could she have been neighing?
could we have been neighing?
could you have been neighing?
could they have been neighing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I neigh?
couldn't you neigh?
couldn't she neigh?
couldn't we neigh?
couldn't you neigh?
couldn't they neigh? 	couldn't I be neighing?
couldn't you be neighing?
couldn't she be neighing?
couldn't we be neighing?
couldn't you be neighing?
couldn't they be neighing? 	couldn't I have neighed?
couldn't you have neighed?
couldn't she have neighed?
couldn't we have neighed?
couldn't you have neighed?
couldn't they have neighed? 	couldn't I have been neighing?
couldn't you have been neighing?
couldn't she have been neighing?
couldn't we have been neighing?
couldn't you have been neighing?
couldn't they have been neighing?