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