I must neigh you must neigh she must neigh we must neigh you must neigh they must neigh
Forma con V-ing
I must be neighing you must be neighing she must be neighing we must be neighing you must be neighing they must be neighing
Perfecto
I must have neighed you must have neighed she must have neighed we must have neighed you must have neighed they must have neighed
Perfecto con V-ing
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
Negación
Forma simple
I mustn't neigh you mustn't neigh she mustn't neigh we mustn't neigh you mustn't neigh they mustn't neigh
Forma con V-ing
I mustn't be neighing you mustn't be neighing she mustn't be neighing we mustn't be neighing you mustn't be neighing they mustn't be neighing
Perfecto
I mustn't have neighed you mustn't have neighed she mustn't have neighed we mustn't have neighed you mustn't have neighed they mustn't have neighed
Perfecto con V-ing
I mustn't have been neighing you mustn't have been neighing she mustn't have been neighing we mustn't have been neighing you mustn't have been neighing they mustn't have been neighing
Forma interrogativa
Forma simple
must I neigh? must you neigh? must she neigh? must we neigh? must you neigh? must they neigh?
Forma con V-ing
must I be neighing? must you be neighing? must she be neighing? must we be neighing? must you be neighing? must they be neighing?
Perfecto
must I have neighed? must you have neighed? must she have neighed? must we have neighed? must you have neighed? must they have neighed?
Perfecto con V-ing
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?
Forma interro-negativa
Forma simple
mustn't I neigh? mustn't you neigh? mustn't she neigh? mustn't we neigh? mustn't you neigh? mustn't they neigh?
Forma con V-ing
mustn't I be neighing? mustn't you be neighing? mustn't she be neighing? mustn't we be neighing? mustn't you be neighing? mustn't they be neighing?
Perfecto
mustn't I have neighed? mustn't you have neighed? mustn't she have neighed? mustn't we have neighed? mustn't you have neighed? mustn't they have neighed?
Perfecto con V-ing
mustn't I have been neighing? mustn't you have been neighing? mustn't she have been neighing? mustn't we have been neighing? mustn't you have been neighing? mustn't they have been neighing?