I must couple you must couple she must couple we must couple you must couple they must couple
Forma con V-ing
I must be coupling you must be coupling she must be coupling we must be coupling you must be coupling they must be coupling
Perfecto
I must have coupled you must have coupled she must have coupled we must have coupled you must have coupled they must have coupled
Perfecto con V-ing
I must have been coupling you must have been coupling she must have been coupling we must have been coupling you must have been coupling they must have been coupling
Negación
Forma simple
I must not couple you must not couple she must not couple we must not couple you must not couple they must not couple
Forma con V-ing
I must not be coupling you must not be coupling she must not be coupling we must not be coupling you must not be coupling they must not be coupling
Perfecto
I must not have coupled you must not have coupled she must not have coupled we must not have coupled you must not have coupled they must not have coupled
Perfecto con V-ing
I must not have been coupling you must not have been coupling she must not have been coupling we must not have been coupling you must not have been coupling they must not have been coupling
Forma interrogativa
Forma simple
must I couple? must you couple? must she couple? must we couple? must you couple? must they couple?
Forma con V-ing
must I be coupling? must you be coupling? must she be coupling? must we be coupling? must you be coupling? must they be coupling?
Perfecto
must I have coupled? must you have coupled? must she have coupled? must we have coupled? must you have coupled? must they have coupled?
Perfecto con V-ing
must I have been coupling? must you have been coupling? must she have been coupling? must we have been coupling? must you have been coupling? must they have been coupling?
Forma interro-negativa
Forma simple
must I not couple? must you not couple? must she not couple? must we not couple? must you not couple? must they not couple?
Forma con V-ing
must I not be coupling? must you not be coupling? must she not be coupling? must we not be coupling? must you not be coupling? must they not be coupling?
Perfecto
must I not have coupled? must you not have coupled? must she not have coupled? must we not have coupled? must you not have coupled? must they not have coupled?
Perfecto con V-ing
must I not have been coupling? must you not have been coupling? must she not have been coupling? must we not have been coupling? must you not have been coupling? must they not have been coupling?