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