must insheathe
Regular verb: insheathe - insheathed- insheathed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must insheathe
you must insheathe
she must insheathe
we must insheathe
you must insheathe
they must insheathe 	I must be insheathing
you must be insheathing
she must be insheathing
we must be insheathing
you must be insheathing
they must be insheathing	I must have insheathed
you must have insheathed
she must have insheathed
we must have insheathed
you must have insheathed
they must have insheathed	I must have been insheathing
you must have been insheathing
she must have been insheathing
we must have been insheathing
you must have been insheathing
they must have been insheathing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't insheathe
you mustn't insheathe
she mustn't insheathe
we mustn't insheathe
you mustn't insheathe
they mustn't insheathe 	I mustn't be insheathing
you mustn't be insheathing
she mustn't be insheathing
we mustn't be insheathing
you mustn't be insheathing
they mustn't be insheathing	I mustn't have insheathed
you mustn't have insheathed
she mustn't have insheathed
we mustn't have insheathed
you mustn't have insheathed
they mustn't have insheathed	I mustn't have been insheathing
you mustn't have been insheathing
she mustn't have been insheathing
we mustn't have been insheathing
you mustn't have been insheathing
they mustn't have been insheathing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I insheathe?
must you insheathe?
must she insheathe?
must we insheathe?
must you insheathe?
must they insheathe? 	must I be insheathing?
must you be insheathing?
must she be insheathing?
must we be insheathing?
must you be insheathing?
must they be insheathing? 	must I have insheathed?
must you have insheathed?
must she have insheathed?
must we have insheathed?
must you have insheathed?
must they have insheathed? 	must I have been insheathing?
must you have been insheathing?
must she have been insheathing?
must we have been insheathing?
must you have been insheathing?
must they have been insheathing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I insheathe?
mustn't you insheathe?
mustn't she insheathe?
mustn't we insheathe?
mustn't you insheathe?
mustn't they insheathe? 	mustn't I be insheathing?
mustn't you be insheathing?
mustn't she be insheathing?
mustn't we be insheathing?
mustn't you be insheathing?
mustn't they be insheathing? 	mustn't I have insheathed?
mustn't you have insheathed?
mustn't she have insheathed?
mustn't we have insheathed?
mustn't you have insheathed?
mustn't they have insheathed? 	mustn't I have been insheathing?
mustn't you have been insheathing?
mustn't she have been insheathing?
mustn't we have been insheathing?
mustn't you have been insheathing?
mustn't they have been insheathing?