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