I must flight-test you must flight-test she must flight-test we must flight-test you must flight-test they must flight-test
Forme en V-ing
I must be flight-testing you must be flight-testing she must be flight-testing we must be flight-testing you must be flight-testing they must be flight-testing
Perfect
I must have flight-tested you must have flight-tested she must have flight-tested we must have flight-tested you must have flight-tested they must have flight-tested
Perfect en V-ing
I must have been flight-testing you must have been flight-testing she must have been flight-testing we must have been flight-testing you must have been flight-testing they must have been flight-testing
Négation
Forme simple
I must not flight-test you must not flight-test she must not flight-test we must not flight-test you must not flight-test they must not flight-test
Forme en V-ing
I must not be flight-testing you must not be flight-testing she must not be flight-testing we must not be flight-testing you must not be flight-testing they must not be flight-testing
Perfect
I must not have flight-tested you must not have flight-tested she must not have flight-tested we must not have flight-tested you must not have flight-tested they must not have flight-tested
Perfect en V-ing
I must not have been flight-testing you must not have been flight-testing she must not have been flight-testing we must not have been flight-testing you must not have been flight-testing they must not have been flight-testing
Forme interrogative
Forme simple
must I flight-test? must you flight-test? must she flight-test? must we flight-test? must you flight-test? must they flight-test?
Forme en V-ing
must I be flight-testing? must you be flight-testing? must she be flight-testing? must we be flight-testing? must you be flight-testing? must they be flight-testing?
Perfect
must I have flight-tested? must you have flight-tested? must she have flight-tested? must we have flight-tested? must you have flight-tested? must they have flight-tested?
Perfect en V-ing
must I have been flight-testing? must you have been flight-testing? must she have been flight-testing? must we have been flight-testing? must you have been flight-testing? must they have been flight-testing?
Forme interro-négative
Forme simple
must I not flight-test? must you not flight-test? must she not flight-test? must we not flight-test? must you not flight-test? must they not flight-test?
Forme en V-ing
must I not be flight-testing? must you not be flight-testing? must she not be flight-testing? must we not be flight-testing? must you not be flight-testing? must they not be flight-testing?
Perfect
must I not have flight-tested? must you not have flight-tested? must she not have flight-tested? must we not have flight-tested? must you not have flight-tested? must they not have flight-tested?
Perfect en V-ing
must I not have been flight-testing? must you not have been flight-testing? must she not have been flight-testing? must we not have been flight-testing? must you not have been flight-testing? must they not have been flight-testing?