may unbox
Regular verb: unbox - unboxed- unboxed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may unbox
you may unbox
he may unbox
we may unbox
you may unbox
they may unbox 	I may be unboxing
you may be unboxing
he may be unboxing
we may be unboxing
you may be unboxing
they may be unboxing	I may have unboxed
you may have unboxed
he may have unboxed
we may have unboxed
you may have unboxed
they may have unboxed	I may have been unboxing
you may have been unboxing
he may have been unboxing
we may have been unboxing
you may have been unboxing
they may have been unboxing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't unbox
you mayn't unbox
he mayn't unbox
we mayn't unbox
you mayn't unbox
they mayn't unbox 	I mayn't be unboxing
you mayn't be unboxing
he mayn't be unboxing
we mayn't be unboxing
you mayn't be unboxing
they mayn't be unboxing	I mayn't have unboxed
you mayn't have unboxed
he mayn't have unboxed
we mayn't have unboxed
you mayn't have unboxed
they mayn't have unboxed	I mayn't have been unboxing
you mayn't have been unboxing
he mayn't have been unboxing
we mayn't have been unboxing
you mayn't have been unboxing
they mayn't have been unboxing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I unbox?
may you unbox?
may he unbox?
may we unbox?
may you unbox?
may they unbox? 	may I be unboxing?
may you be unboxing?
may he be unboxing?
may we be unboxing?
may you be unboxing?
may they be unboxing? 	may I have unboxed?
may you have unboxed?
may he have unboxed?
may we have unboxed?
may you have unboxed?
may they have unboxed? 	may I have been unboxing?
may you have been unboxing?
may he have been unboxing?
may we have been unboxing?
may you have been unboxing?
may they have been unboxing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I unbox?
mayn't you unbox?
mayn't he unbox?
mayn't we unbox?
mayn't you unbox?
mayn't they unbox? 	mayn't I be unboxing?
mayn't you be unboxing?
mayn't he be unboxing?
mayn't we be unboxing?
mayn't you be unboxing?
mayn't they be unboxing? 	mayn't I have unboxed?
mayn't you have unboxed?
mayn't he have unboxed?
mayn't we have unboxed?
mayn't you have unboxed?
mayn't they have unboxed? 	mayn't I have been unboxing?
mayn't you have been unboxing?
mayn't he have been unboxing?
mayn't we have been unboxing?
mayn't you have been unboxing?
mayn't they have been unboxing?