must machine
Verbo regular: machine - machined- machined

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must machine
you must machine
he must machine
we must machine
you must machine
they must machine 	I must be machining
you must be machining
he must be machining
we must be machining
you must be machining
they must be machining	I must have machined
you must have machined
he must have machined
we must have machined
you must have machined
they must have machined	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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not machine
you must not machine
he must not machine
we must not machine
you must not machine
they must not machine 	I must not be machining
you must not be machining
he must not be machining
we must not be machining
you must not be machining
they must not be machining	I must not have machined
you must not have machined
he must not have machined
we must not have machined
you must not have machined
they must not have machined	I must not have been machining
you must not have been machining
he must not have been machining
we must not have been machining
you must not have been machining
they must not have been machining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I machine?
must you machine?
must he machine?
must we machine?
must you machine?
must they machine? 	must I be machining?
must you be machining?
must he be machining?
must we be machining?
must you be machining?
must they be machining? 	must I have machined?
must you have machined?
must he have machined?
must we have machined?
must you have machined?
must they have machined? 	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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not machine?
must you not machine?
must he not machine?
must we not machine?
must you not machine?
must they not machine? 	must I not be machining?
must you not be machining?
must he not be machining?
must we not be machining?
must you not be machining?
must they not be machining? 	must I not have machined?
must you not have machined?
must he not have machined?
must we not have machined?
must you not have machined?
must they not have machined? 	must I not have been machining?
must you not have been machining?
must he not have been machining?
must we not have been machining?
must you not have been machining?
must they not have been machining?