could insheathe
Regular verb: insheathe - insheathed- insheathed

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

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

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

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