may sheathe
Regular verb: sheathe - sheathed- sheathed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may sheathe
you may sheathe
she may sheathe
we may sheathe
you may sheathe
they may sheathe 	I may be sheathing
you may be sheathing
she may be sheathing
we may be sheathing
you may be sheathing
they may be sheathing	I may have sheathed
you may have sheathed
she may have sheathed
we may have sheathed
you may have sheathed
they may have sheathed	I may have been sheathing
you may have been sheathing
she may have been sheathing
we may have been sheathing
you may have been sheathing
they may have been sheathing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't sheathe
you mayn't sheathe
she mayn't sheathe
we mayn't sheathe
you mayn't sheathe
they mayn't sheathe 	I mayn't be sheathing
you mayn't be sheathing
she mayn't be sheathing
we mayn't be sheathing
you mayn't be sheathing
they mayn't be sheathing	I mayn't have sheathed
you mayn't have sheathed
she mayn't have sheathed
we mayn't have sheathed
you mayn't have sheathed
they mayn't have sheathed	I mayn't have been sheathing
you mayn't have been sheathing
she mayn't have been sheathing
we mayn't have been sheathing
you mayn't have been sheathing
they mayn't have been sheathing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I sheathe?
may you sheathe?
may she sheathe?
may we sheathe?
may you sheathe?
may they sheathe? 	may I be sheathing?
may you be sheathing?
may she be sheathing?
may we be sheathing?
may you be sheathing?
may they be sheathing? 	may I have sheathed?
may you have sheathed?
may she have sheathed?
may we have sheathed?
may you have sheathed?
may they have sheathed? 	may I have been sheathing?
may you have been sheathing?
may she have been sheathing?
may we have been sheathing?
may you have been sheathing?
may they have been sheathing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I sheathe?
mayn't you sheathe?
mayn't she sheathe?
mayn't we sheathe?
mayn't you sheathe?
mayn't they sheathe? 	mayn't I be sheathing?
mayn't you be sheathing?
mayn't she be sheathing?
mayn't we be sheathing?
mayn't you be sheathing?
mayn't they be sheathing? 	mayn't I have sheathed?
mayn't you have sheathed?
mayn't she have sheathed?
mayn't we have sheathed?
mayn't you have sheathed?
mayn't they have sheathed? 	mayn't I have been sheathing?
mayn't you have been sheathing?
mayn't she have been sheathing?
mayn't we have been sheathing?
mayn't you have been sheathing?
mayn't they have been sheathing?