I must coo you must coo he must coo we must coo you must coo they must coo
Forma con V-ing
I must be cooing you must be cooing he must be cooing we must be cooing you must be cooing they must be cooing
Perfecto
I must have cooed you must have cooed he must have cooed we must have cooed you must have cooed they must have cooed
Perfecto con V-ing
I must have been cooing you must have been cooing he must have been cooing we must have been cooing you must have been cooing they must have been cooing
Negación
Forma simple
I must not coo you must not coo he must not coo we must not coo you must not coo they must not coo
Forma con V-ing
I must not be cooing you must not be cooing he must not be cooing we must not be cooing you must not be cooing they must not be cooing
Perfecto
I must not have cooed you must not have cooed he must not have cooed we must not have cooed you must not have cooed they must not have cooed
Perfecto con V-ing
I must not have been cooing you must not have been cooing he must not have been cooing we must not have been cooing you must not have been cooing they must not have been cooing
Forma interrogativa
Forma simple
must I coo? must you coo? must he coo? must we coo? must you coo? must they coo?
Forma con V-ing
must I be cooing? must you be cooing? must he be cooing? must we be cooing? must you be cooing? must they be cooing?
Perfecto
must I have cooed? must you have cooed? must he have cooed? must we have cooed? must you have cooed? must they have cooed?
Perfecto con V-ing
must I have been cooing? must you have been cooing? must he have been cooing? must we have been cooing? must you have been cooing? must they have been cooing?
Forma interro-negativa
Forma simple
must I not coo? must you not coo? must he not coo? must we not coo? must you not coo? must they not coo?
Forma con V-ing
must I not be cooing? must you not be cooing? must he not be cooing? must we not be cooing? must you not be cooing? must they not be cooing?
Perfecto
must I not have cooed? must you not have cooed? must he not have cooed? must we not have cooed? must you not have cooed? must they not have cooed?
Perfecto con V-ing
must I not have been cooing? must you not have been cooing? must he not have been cooing? must we not have been cooing? must you not have been cooing? must they not have been cooing?