Conjugación del verbo inglés
MUST CONCERTINA

Verbo regular: concertina - concertinaed - concertinaed

Afirmación

Forma simple	Forma con V-ing
I must concertina you must concertina he must concertina we must concertina you must concertina they must concertina	I must be concertinaing you must be concertinaing he must be concertinaing we must be concertinaing you must be concertinaing they must be concertinaing
Perfecto	Perfecto con V-ing
I must have concertinaed you must have concertinaed he must have concertinaed we must have concertinaed you must have concertinaed they must have concertinaed	I must have been concertinaing you must have been concertinaing he must have been concertinaing we must have been concertinaing you must have been concertinaing they must have been concertinaing

Negación

Forma simple	Forma con V-ing
I must not concertina you must not concertina he must not concertina we must not concertina you must not concertina they must not concertina	I must not be concertinaing you must not be concertinaing he must not be concertinaing we must not be concertinaing you must not be concertinaing they must not be concertinaing
Perfecto	Perfecto con V-ing
I must not have concertinaed you must not have concertinaed he must not have concertinaed we must not have concertinaed you must not have concertinaed they must not have concertinaed	I must not have been concertinaing you must not have been concertinaing he must not have been concertinaing we must not have been concertinaing you must not have been concertinaing they must not have been concertinaing

Forma interrogativa

Forma simple	Forma con V-ing
must I concertina? must you concertina? must he concertina? must we concertina? must you concertina? must they concertina?	must I be concertinaing? must you be concertinaing? must he be concertinaing? must we be concertinaing? must you be concertinaing? must they be concertinaing?
Perfecto	Perfecto con V-ing
must I have concertinaed? must you have concertinaed? must he have concertinaed? must we have concertinaed? must you have concertinaed? must they have concertinaed?	must I have been concertinaing? must you have been concertinaing? must he have been concertinaing? must we have been concertinaing? must you have been concertinaing? must they have been concertinaing?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not concertina? must you not concertina? must he not concertina? must we not concertina? must you not concertina? must they not concertina?	must I not be concertinaing? must you not be concertinaing? must he not be concertinaing? must we not be concertinaing? must you not be concertinaing? must they not be concertinaing?
Perfecto	Perfecto con V-ing
must I not have concertinaed? must you not have concertinaed? must he not have concertinaed? must we not have concertinaed? must you not have concertinaed? must they not have concertinaed?	must I not have been concertinaing? must you not have been concertinaing? must he not have been concertinaing? must we not have been concertinaing? must you not have been concertinaing? must they not have been concertinaing?