should derive
Regular verb: derive - derived- derived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd derive
you'd derive
she'd derive
we'd derive
you'd derive
they'd derive 	I'd be deriving
you'd be deriving
she'd be deriving
we'd be deriving
you'd be deriving
they'd be deriving	I should've derived
you should've derived
she should've derived
we should've derived
you should've derived
they should've derived	I should've been deriving
you should've been deriving
she should've been deriving
we should've been deriving
you should've been deriving
they should've been deriving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't derive
you shouldn't derive
she shouldn't derive
we shouldn't derive
you shouldn't derive
they shouldn't derive 	I shouldn't be deriving
you shouldn't be deriving
she shouldn't be deriving
we shouldn't be deriving
you shouldn't be deriving
they shouldn't be deriving	I shouldn't have derived
you shouldn't have derived
she shouldn't have derived
we shouldn't have derived
you shouldn't have derived
they shouldn't have derived	I shouldn't have been deriving
you shouldn't have been deriving
she shouldn't have been deriving
we shouldn't have been deriving
you shouldn't have been deriving
they shouldn't have been deriving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I derive?
should you derive?
should she derive?
should we derive?
should you derive?
should they derive? 	should I be deriving?
should you be deriving?
should she be deriving?
should we be deriving?
should you be deriving?
should they be deriving? 	should I have derived?
should you have derived?
should she have derived?
should we have derived?
should you have derived?
should they have derived? 	should I have been deriving?
should you have been deriving?
should she have been deriving?
should we have been deriving?
should you have been deriving?
should they have been deriving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I derive?
shouldn't you derive?
shouldn't she derive?
shouldn't we derive?
shouldn't you derive?
shouldn't they derive? 	shouldn't I be deriving?
shouldn't you be deriving?
shouldn't she be deriving?
shouldn't we be deriving?
shouldn't you be deriving?
shouldn't they be deriving? 	shouldn't I have derived?
shouldn't you have derived?
shouldn't she have derived?
shouldn't we have derived?
shouldn't you have derived?
shouldn't they have derived? 	shouldn't I have been deriving?
shouldn't you have been deriving?
shouldn't she have been deriving?
shouldn't we have been deriving?
shouldn't you have been deriving?
shouldn't they have been deriving?