English verb conjugation
SHOULD SHEATHE

Regular verb: sheathe - sheathed - sheathed

Affirmation

Simple form	V-ing form
I'd sheathe you'd sheathe he'd sheathe we'd sheathe you'd sheathe they'd sheathe	I'd be sheathing you'd be sheathing he'd be sheathing we'd be sheathing you'd be sheathing they'd be sheathing
Perfect	V-ing perfect
I should've sheathed you should've sheathed he should've sheathed we should've sheathed you should've sheathed they should've sheathed	I should've been sheathing you should've been sheathing he should've been sheathing we should've been sheathing you should've been sheathing they should've been sheathing

Negation

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

Interrogative form

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

Interro-negative form

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