may unvoice
Regular verb: unvoice - unvoiced- unvoiced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may unvoice
you may unvoice
he may unvoice
we may unvoice
you may unvoice
they may unvoice 	I may be unvoicing
you may be unvoicing
he may be unvoicing
we may be unvoicing
you may be unvoicing
they may be unvoicing	I may have unvoiced
you may have unvoiced
he may have unvoiced
we may have unvoiced
you may have unvoiced
they may have unvoiced	I may have been unvoicing
you may have been unvoicing
he may have been unvoicing
we may have been unvoicing
you may have been unvoicing
they may have been unvoicing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't unvoice
you mayn't unvoice
he mayn't unvoice
we mayn't unvoice
you mayn't unvoice
they mayn't unvoice 	I mayn't be unvoicing
you mayn't be unvoicing
he mayn't be unvoicing
we mayn't be unvoicing
you mayn't be unvoicing
they mayn't be unvoicing	I mayn't have unvoiced
you mayn't have unvoiced
he mayn't have unvoiced
we mayn't have unvoiced
you mayn't have unvoiced
they mayn't have unvoiced	I mayn't have been unvoicing
you mayn't have been unvoicing
he mayn't have been unvoicing
we mayn't have been unvoicing
you mayn't have been unvoicing
they mayn't have been unvoicing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I unvoice?
may you unvoice?
may he unvoice?
may we unvoice?
may you unvoice?
may they unvoice? 	may I be unvoicing?
may you be unvoicing?
may he be unvoicing?
may we be unvoicing?
may you be unvoicing?
may they be unvoicing? 	may I have unvoiced?
may you have unvoiced?
may he have unvoiced?
may we have unvoiced?
may you have unvoiced?
may they have unvoiced? 	may I have been unvoicing?
may you have been unvoicing?
may he have been unvoicing?
may we have been unvoicing?
may you have been unvoicing?
may they have been unvoicing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I unvoice?
mayn't you unvoice?
mayn't he unvoice?
mayn't we unvoice?
mayn't you unvoice?
mayn't they unvoice? 	mayn't I be unvoicing?
mayn't you be unvoicing?
mayn't he be unvoicing?
mayn't we be unvoicing?
mayn't you be unvoicing?
mayn't they be unvoicing? 	mayn't I have unvoiced?
mayn't you have unvoiced?
mayn't he have unvoiced?
mayn't we have unvoiced?
mayn't you have unvoiced?
mayn't they have unvoiced? 	mayn't I have been unvoicing?
mayn't you have been unvoicing?
mayn't he have been unvoicing?
mayn't we have been unvoicing?
mayn't you have been unvoicing?
mayn't they have been unvoicing?