must flight-test
Verbo regular: flight-test - flight-tested- flight-tested

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

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't flight-test
you mustn't flight-test
he mustn't flight-test
we mustn't flight-test
you mustn't flight-test
they mustn't flight-test 	I mustn't be flight-testing
you mustn't be flight-testing
he mustn't be flight-testing
we mustn't be flight-testing
you mustn't be flight-testing
they mustn't be flight-testing	I mustn't have flight-tested
you mustn't have flight-tested
he mustn't have flight-tested
we mustn't have flight-tested
you mustn't have flight-tested
they mustn't have flight-tested	I mustn't have been flight-testing
you mustn't have been flight-testing
he mustn't have been flight-testing
we mustn't have been flight-testing
you mustn't have been flight-testing
they mustn't have been flight-testing	

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

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I flight-test?
mustn't you flight-test?
mustn't he flight-test?
mustn't we flight-test?
mustn't you flight-test?
mustn't they flight-test? 	mustn't I be flight-testing?
mustn't you be flight-testing?
mustn't he be flight-testing?
mustn't we be flight-testing?
mustn't you be flight-testing?
mustn't they be flight-testing? 	mustn't I have flight-tested?
mustn't you have flight-tested?
mustn't he have flight-tested?
mustn't we have flight-tested?
mustn't you have flight-tested?
mustn't they have flight-tested? 	mustn't I have been flight-testing?
mustn't you have been flight-testing?
mustn't he have been flight-testing?
mustn't we have been flight-testing?
mustn't you have been flight-testing?
mustn't they have been flight-testing?