may unpack
Regular verb: unpack - unpacked- unpacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may unpack
you may unpack
she may unpack
we may unpack
you may unpack
they may unpack 	I may be unpacking
you may be unpacking
she may be unpacking
we may be unpacking
you may be unpacking
they may be unpacking	I may have unpacked
you may have unpacked
she may have unpacked
we may have unpacked
you may have unpacked
they may have unpacked	I may have been unpacking
you may have been unpacking
she may have been unpacking
we may have been unpacking
you may have been unpacking
they may have been unpacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't unpack
you mayn't unpack
she mayn't unpack
we mayn't unpack
you mayn't unpack
they mayn't unpack 	I mayn't be unpacking
you mayn't be unpacking
she mayn't be unpacking
we mayn't be unpacking
you mayn't be unpacking
they mayn't be unpacking	I mayn't have unpacked
you mayn't have unpacked
she mayn't have unpacked
we mayn't have unpacked
you mayn't have unpacked
they mayn't have unpacked	I mayn't have been unpacking
you mayn't have been unpacking
she mayn't have been unpacking
we mayn't have been unpacking
you mayn't have been unpacking
they mayn't have been unpacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I unpack?
may you unpack?
may she unpack?
may we unpack?
may you unpack?
may they unpack? 	may I be unpacking?
may you be unpacking?
may she be unpacking?
may we be unpacking?
may you be unpacking?
may they be unpacking? 	may I have unpacked?
may you have unpacked?
may she have unpacked?
may we have unpacked?
may you have unpacked?
may they have unpacked? 	may I have been unpacking?
may you have been unpacking?
may she have been unpacking?
may we have been unpacking?
may you have been unpacking?
may they have been unpacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I unpack?
mayn't you unpack?
mayn't she unpack?
mayn't we unpack?
mayn't you unpack?
mayn't they unpack? 	mayn't I be unpacking?
mayn't you be unpacking?
mayn't she be unpacking?
mayn't we be unpacking?
mayn't you be unpacking?
mayn't they be unpacking? 	mayn't I have unpacked?
mayn't you have unpacked?
mayn't she have unpacked?
mayn't we have unpacked?
mayn't you have unpacked?
mayn't they have unpacked? 	mayn't I have been unpacking?
mayn't you have been unpacking?
mayn't she have been unpacking?
mayn't we have been unpacking?
mayn't you have been unpacking?
mayn't they have been unpacking?