English verb conjugation
MUST NEIGH

Regular verb: neigh - neighed - neighed

Affirmation

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

Negation

Simple form	V-ing form
I must not neigh you must not neigh she must not neigh we must not neigh you must not neigh they must not neigh	I must not be neighing you must not be neighing she must not be neighing we must not be neighing you must not be neighing they must not be neighing
Perfect	V-ing perfect
I must not have neighed you must not have neighed she must not have neighed we must not have neighed you must not have neighed they must not have neighed	I must not have been neighing you must not have been neighing she must not have been neighing we must not have been neighing you must not have been neighing they must not have been neighing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not neigh? must you not neigh? must she not neigh? must we not neigh? must you not neigh? must they not neigh?	must I not be neighing? must you not be neighing? must she not be neighing? must we not be neighing? must you not be neighing? must they not be neighing?
Perfect	V-ing perfect
must I not have neighed? must you not have neighed? must she not have neighed? must we not have neighed? must you not have neighed? must they not have neighed?	must I not have been neighing? must you not have been neighing? must she not have been neighing? must we not have been neighing? must you not have been neighing? must they not have been neighing?