may grab
Regular verb: grab - grabbed- grabbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may grab
you may grab
she may grab
we may grab
you may grab
they may grab 	I may be grabbing
you may be grabbing
she may be grabbing
we may be grabbing
you may be grabbing
they may be grabbing	I may have grabbed
you may have grabbed
she may have grabbed
we may have grabbed
you may have grabbed
they may have grabbed	I may have been grabbing
you may have been grabbing
she may have been grabbing
we may have been grabbing
you may have been grabbing
they may have been grabbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't grab
you mayn't grab
she mayn't grab
we mayn't grab
you mayn't grab
they mayn't grab 	I mayn't be grabbing
you mayn't be grabbing
she mayn't be grabbing
we mayn't be grabbing
you mayn't be grabbing
they mayn't be grabbing	I mayn't have grabbed
you mayn't have grabbed
she mayn't have grabbed
we mayn't have grabbed
you mayn't have grabbed
they mayn't have grabbed	I mayn't have been grabbing
you mayn't have been grabbing
she mayn't have been grabbing
we mayn't have been grabbing
you mayn't have been grabbing
they mayn't have been grabbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I grab?
may you grab?
may she grab?
may we grab?
may you grab?
may they grab? 	may I be grabbing?
may you be grabbing?
may she be grabbing?
may we be grabbing?
may you be grabbing?
may they be grabbing? 	may I have grabbed?
may you have grabbed?
may she have grabbed?
may we have grabbed?
may you have grabbed?
may they have grabbed? 	may I have been grabbing?
may you have been grabbing?
may she have been grabbing?
may we have been grabbing?
may you have been grabbing?
may they have been grabbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I grab?
mayn't you grab?
mayn't she grab?
mayn't we grab?
mayn't you grab?
mayn't they grab? 	mayn't I be grabbing?
mayn't you be grabbing?
mayn't she be grabbing?
mayn't we be grabbing?
mayn't you be grabbing?
mayn't they be grabbing? 	mayn't I have grabbed?
mayn't you have grabbed?
mayn't she have grabbed?
mayn't we have grabbed?
mayn't you have grabbed?
mayn't they have grabbed? 	mayn't I have been grabbing?
mayn't you have been grabbing?
mayn't she have been grabbing?
mayn't we have been grabbing?
mayn't you have been grabbing?
mayn't they have been grabbing?