should trouble
Regular verb: trouble - troubled- troubled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd trouble
you'd trouble
she'd trouble
we'd trouble
you'd trouble
they'd trouble 	I'd be troubling
you'd be troubling
she'd be troubling
we'd be troubling
you'd be troubling
they'd be troubling	I should've troubled
you should've troubled
she should've troubled
we should've troubled
you should've troubled
they should've troubled	I should've been troubling
you should've been troubling
she should've been troubling
we should've been troubling
you should've been troubling
they should've been troubling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't trouble
you shouldn't trouble
she shouldn't trouble
we shouldn't trouble
you shouldn't trouble
they shouldn't trouble 	I shouldn't be troubling
you shouldn't be troubling
she shouldn't be troubling
we shouldn't be troubling
you shouldn't be troubling
they shouldn't be troubling	I shouldn't have troubled
you shouldn't have troubled
she shouldn't have troubled
we shouldn't have troubled
you shouldn't have troubled
they shouldn't have troubled	I shouldn't have been troubling
you shouldn't have been troubling
she shouldn't have been troubling
we shouldn't have been troubling
you shouldn't have been troubling
they shouldn't have been troubling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I trouble?
should you trouble?
should she trouble?
should we trouble?
should you trouble?
should they trouble? 	should I be troubling?
should you be troubling?
should she be troubling?
should we be troubling?
should you be troubling?
should they be troubling? 	should I have troubled?
should you have troubled?
should she have troubled?
should we have troubled?
should you have troubled?
should they have troubled? 	should I have been troubling?
should you have been troubling?
should she have been troubling?
should we have been troubling?
should you have been troubling?
should they have been troubling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I trouble?
shouldn't you trouble?
shouldn't she trouble?
shouldn't we trouble?
shouldn't you trouble?
shouldn't they trouble? 	shouldn't I be troubling?
shouldn't you be troubling?
shouldn't she be troubling?
shouldn't we be troubling?
shouldn't you be troubling?
shouldn't they be troubling? 	shouldn't I have troubled?
shouldn't you have troubled?
shouldn't she have troubled?
shouldn't we have troubled?
shouldn't you have troubled?
shouldn't they have troubled? 	shouldn't I have been troubling?
shouldn't you have been troubling?
shouldn't she have been troubling?
shouldn't we have been troubling?
shouldn't you have been troubling?
shouldn't they have been troubling?