I must creep you must creep he must creep we must creep you must creep they must creep
Forma con V-ing
I must be creeping you must be creeping he must be creeping we must be creeping you must be creeping they must be creeping
Perfecto
I must have crept you must have crept he must have crept we must have crept you must have crept they must have crept
Perfecto con V-ing
I must have been creeping you must have been creeping he must have been creeping we must have been creeping you must have been creeping they must have been creeping
Negación
Forma simple
I mustn't creep you mustn't creep he mustn't creep we mustn't creep you mustn't creep they mustn't creep
Forma con V-ing
I mustn't be creeping you mustn't be creeping he mustn't be creeping we mustn't be creeping you mustn't be creeping they mustn't be creeping
Perfecto
I mustn't have crept you mustn't have crept he mustn't have crept we mustn't have crept you mustn't have crept they mustn't have crept
Perfecto con V-ing
I mustn't have been creeping you mustn't have been creeping he mustn't have been creeping we mustn't have been creeping you mustn't have been creeping they mustn't have been creeping
Forma interrogativa
Forma simple
must I creep? must you creep? must he creep? must we creep? must you creep? must they creep?
Forma con V-ing
must I be creeping? must you be creeping? must he be creeping? must we be creeping? must you be creeping? must they be creeping?
Perfecto
must I have crept? must you have crept? must he have crept? must we have crept? must you have crept? must they have crept?
Perfecto con V-ing
must I have been creeping? must you have been creeping? must he have been creeping? must we have been creeping? must you have been creeping? must they have been creeping?
Forma interro-negativa
Forma simple
mustn't I creep? mustn't you creep? mustn't he creep? mustn't we creep? mustn't you creep? mustn't they creep?
Forma con V-ing
mustn't I be creeping? mustn't you be creeping? mustn't he be creeping? mustn't we be creeping? mustn't you be creeping? mustn't they be creeping?
Perfecto
mustn't I have crept? mustn't you have crept? mustn't he have crept? mustn't we have crept? mustn't you have crept? mustn't they have crept?
Perfecto con V-ing
mustn't I have been creeping? mustn't you have been creeping? mustn't he have been creeping? mustn't we have been creeping? mustn't you have been creeping? mustn't they have been creeping?