may flight-test
Regular verb: flight-test - flight-tested- flight-tested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may flight-test
you may flight-test
he may flight-test
we may flight-test
you may flight-test
they may flight-test 	I may be flight-testing
you may be flight-testing
he may be flight-testing
we may be flight-testing
you may be flight-testing
they may be flight-testing	I may have flight-tested
you may have flight-tested
he may have flight-tested
we may have flight-tested
you may have flight-tested
they may have flight-tested	I may have been flight-testing
you may have been flight-testing
he may have been flight-testing
we may have been flight-testing
you may have been flight-testing
they may have been flight-testing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't flight-test
you mayn't flight-test
he mayn't flight-test
we mayn't flight-test
you mayn't flight-test
they mayn't flight-test 	I mayn't be flight-testing
you mayn't be flight-testing
he mayn't be flight-testing
we mayn't be flight-testing
you mayn't be flight-testing
they mayn't be flight-testing	I mayn't have flight-tested
you mayn't have flight-tested
he mayn't have flight-tested
we mayn't have flight-tested
you mayn't have flight-tested
they mayn't have flight-tested	I mayn't have been flight-testing
you mayn't have been flight-testing
he mayn't have been flight-testing
we mayn't have been flight-testing
you mayn't have been flight-testing
they mayn't have been flight-testing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I flight-test?
may you flight-test?
may he flight-test?
may we flight-test?
may you flight-test?
may they flight-test? 	may I be flight-testing?
may you be flight-testing?
may he be flight-testing?
may we be flight-testing?
may you be flight-testing?
may they be flight-testing? 	may I have flight-tested?
may you have flight-tested?
may he have flight-tested?
may we have flight-tested?
may you have flight-tested?
may they have flight-tested? 	may I have been flight-testing?
may you have been flight-testing?
may he have been flight-testing?
may we have been flight-testing?
may you have been flight-testing?
may they have been flight-testing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I flight-test?
mayn't you flight-test?
mayn't he flight-test?
mayn't we flight-test?
mayn't you flight-test?
mayn't they flight-test? 	mayn't I be flight-testing?
mayn't you be flight-testing?
mayn't he be flight-testing?
mayn't we be flight-testing?
mayn't you be flight-testing?
mayn't they be flight-testing? 	mayn't I have flight-tested?
mayn't you have flight-tested?
mayn't he have flight-tested?
mayn't we have flight-tested?
mayn't you have flight-tested?
mayn't they have flight-tested? 	mayn't I have been flight-testing?
mayn't you have been flight-testing?
mayn't he have been flight-testing?
mayn't we have been flight-testing?
mayn't you have been flight-testing?
mayn't they have been flight-testing?