may attach
Regular verb: attach - attached- attached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may attach
you may attach
she may attach
we may attach
you may attach
they may attach 	I may be attaching
you may be attaching
she may be attaching
we may be attaching
you may be attaching
they may be attaching	I may have attached
you may have attached
she may have attached
we may have attached
you may have attached
they may have attached	I may have been attaching
you may have been attaching
she may have been attaching
we may have been attaching
you may have been attaching
they may have been attaching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't attach
you mayn't attach
she mayn't attach
we mayn't attach
you mayn't attach
they mayn't attach 	I mayn't be attaching
you mayn't be attaching
she mayn't be attaching
we mayn't be attaching
you mayn't be attaching
they mayn't be attaching	I mayn't have attached
you mayn't have attached
she mayn't have attached
we mayn't have attached
you mayn't have attached
they mayn't have attached	I mayn't have been attaching
you mayn't have been attaching
she mayn't have been attaching
we mayn't have been attaching
you mayn't have been attaching
they mayn't have been attaching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I attach?
may you attach?
may she attach?
may we attach?
may you attach?
may they attach? 	may I be attaching?
may you be attaching?
may she be attaching?
may we be attaching?
may you be attaching?
may they be attaching? 	may I have attached?
may you have attached?
may she have attached?
may we have attached?
may you have attached?
may they have attached? 	may I have been attaching?
may you have been attaching?
may she have been attaching?
may we have been attaching?
may you have been attaching?
may they have been attaching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I attach?
mayn't you attach?
mayn't she attach?
mayn't we attach?
mayn't you attach?
mayn't they attach? 	mayn't I be attaching?
mayn't you be attaching?
mayn't she be attaching?
mayn't we be attaching?
mayn't you be attaching?
mayn't they be attaching? 	mayn't I have attached?
mayn't you have attached?
mayn't she have attached?
mayn't we have attached?
mayn't you have attached?
mayn't they have attached? 	mayn't I have been attaching?
mayn't you have been attaching?
mayn't she have been attaching?
mayn't we have been attaching?
mayn't you have been attaching?
mayn't they have been attaching?