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