can sheathe
Regular verb: sheathe - sheathed- sheathed

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

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

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

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