may engineer
Regular verb: engineer - engineered- engineered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may engineer
you may engineer
she may engineer
we may engineer
you may engineer
they may engineer 	I may be engineering
you may be engineering
she may be engineering
we may be engineering
you may be engineering
they may be engineering	I may have engineered
you may have engineered
she may have engineered
we may have engineered
you may have engineered
they may have engineered	I may have been engineering
you may have been engineering
she may have been engineering
we may have been engineering
you may have been engineering
they may have been engineering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't engineer
you mayn't engineer
she mayn't engineer
we mayn't engineer
you mayn't engineer
they mayn't engineer 	I mayn't be engineering
you mayn't be engineering
she mayn't be engineering
we mayn't be engineering
you mayn't be engineering
they mayn't be engineering	I mayn't have engineered
you mayn't have engineered
she mayn't have engineered
we mayn't have engineered
you mayn't have engineered
they mayn't have engineered	I mayn't have been engineering
you mayn't have been engineering
she mayn't have been engineering
we mayn't have been engineering
you mayn't have been engineering
they mayn't have been engineering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I engineer?
may you engineer?
may she engineer?
may we engineer?
may you engineer?
may they engineer? 	may I be engineering?
may you be engineering?
may she be engineering?
may we be engineering?
may you be engineering?
may they be engineering? 	may I have engineered?
may you have engineered?
may she have engineered?
may we have engineered?
may you have engineered?
may they have engineered? 	may I have been engineering?
may you have been engineering?
may she have been engineering?
may we have been engineering?
may you have been engineering?
may they have been engineering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I engineer?
mayn't you engineer?
mayn't she engineer?
mayn't we engineer?
mayn't you engineer?
mayn't they engineer? 	mayn't I be engineering?
mayn't you be engineering?
mayn't she be engineering?
mayn't we be engineering?
mayn't you be engineering?
mayn't they be engineering? 	mayn't I have engineered?
mayn't you have engineered?
mayn't she have engineered?
mayn't we have engineered?
mayn't you have engineered?
mayn't they have engineered? 	mayn't I have been engineering?
mayn't you have been engineering?
mayn't she have been engineering?
mayn't we have been engineering?
mayn't you have been engineering?
mayn't they have been engineering?