should overtighten
Regular verb: overtighten - overtightened- overtightened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd overtighten
you'd overtighten
she'd overtighten
we'd overtighten
you'd overtighten
they'd overtighten 	I'd be overtightening
you'd be overtightening
she'd be overtightening
we'd be overtightening
you'd be overtightening
they'd be overtightening	I should've overtightened
you should've overtightened
she should've overtightened
we should've overtightened
you should've overtightened
they should've overtightened	I should've been overtightening
you should've been overtightening
she should've been overtightening
we should've been overtightening
you should've been overtightening
they should've been overtightening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't overtighten
you shouldn't overtighten
she shouldn't overtighten
we shouldn't overtighten
you shouldn't overtighten
they shouldn't overtighten 	I shouldn't be overtightening
you shouldn't be overtightening
she shouldn't be overtightening
we shouldn't be overtightening
you shouldn't be overtightening
they shouldn't be overtightening	I shouldn't have overtightened
you shouldn't have overtightened
she shouldn't have overtightened
we shouldn't have overtightened
you shouldn't have overtightened
they shouldn't have overtightened	I shouldn't have been overtightening
you shouldn't have been overtightening
she shouldn't have been overtightening
we shouldn't have been overtightening
you shouldn't have been overtightening
they shouldn't have been overtightening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I overtighten?
should you overtighten?
should she overtighten?
should we overtighten?
should you overtighten?
should they overtighten? 	should I be overtightening?
should you be overtightening?
should she be overtightening?
should we be overtightening?
should you be overtightening?
should they be overtightening? 	should I have overtightened?
should you have overtightened?
should she have overtightened?
should we have overtightened?
should you have overtightened?
should they have overtightened? 	should I have been overtightening?
should you have been overtightening?
should she have been overtightening?
should we have been overtightening?
should you have been overtightening?
should they have been overtightening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I overtighten?
shouldn't you overtighten?
shouldn't she overtighten?
shouldn't we overtighten?
shouldn't you overtighten?
shouldn't they overtighten? 	shouldn't I be overtightening?
shouldn't you be overtightening?
shouldn't she be overtightening?
shouldn't we be overtightening?
shouldn't you be overtightening?
shouldn't they be overtightening? 	shouldn't I have overtightened?
shouldn't you have overtightened?
shouldn't she have overtightened?
shouldn't we have overtightened?
shouldn't you have overtightened?
shouldn't they have overtightened? 	shouldn't I have been overtightening?
shouldn't you have been overtightening?
shouldn't she have been overtightening?
shouldn't we have been overtightening?
shouldn't you have been overtightening?
shouldn't they have been overtightening?