must test
Verbo regular: test - tested- tested

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must test
you must test
he must test
we must test
you must test
they must test 	I must be testing
you must be testing
he must be testing
we must be testing
you must be testing
they must be testing	I must have tested
you must have tested
he must have tested
we must have tested
you must have tested
they must have tested	I must have been testing
you must have been testing
he must have been testing
we must have been testing
you must have been testing
they must have been testing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not test
you must not test
he must not test
we must not test
you must not test
they must not test 	I must not be testing
you must not be testing
he must not be testing
we must not be testing
you must not be testing
they must not be testing	I must not have tested
you must not have tested
he must not have tested
we must not have tested
you must not have tested
they must not have tested	I must not have been testing
you must not have been testing
he must not have been testing
we must not have been testing
you must not have been testing
they must not have been testing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I test?
must you test?
must he test?
must we test?
must you test?
must they test? 	must I be testing?
must you be testing?
must he be testing?
must we be testing?
must you be testing?
must they be testing? 	must I have tested?
must you have tested?
must he have tested?
must we have tested?
must you have tested?
must they have tested? 	must I have been testing?
must you have been testing?
must he have been testing?
must we have been testing?
must you have been testing?
must they have been testing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not test?
must you not test?
must he not test?
must we not test?
must you not test?
must they not test? 	must I not be testing?
must you not be testing?
must he not be testing?
must we not be testing?
must you not be testing?
must they not be testing? 	must I not have tested?
must you not have tested?
must he not have tested?
must we not have tested?
must you not have tested?
must they not have tested? 	must I not have been testing?
must you not have been testing?
must he not have been testing?
must we not have been testing?
must you not have been testing?
must they not have been testing?