should oblige
Regular verb: oblige - obliged- obliged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd oblige
you'd oblige
she'd oblige
we'd oblige
you'd oblige
they'd oblige 	I'd be obliging
you'd be obliging
she'd be obliging
we'd be obliging
you'd be obliging
they'd be obliging	I should've obliged
you should've obliged
she should've obliged
we should've obliged
you should've obliged
they should've obliged	I should've been obliging
you should've been obliging
she should've been obliging
we should've been obliging
you should've been obliging
they should've been obliging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't oblige
you shouldn't oblige
she shouldn't oblige
we shouldn't oblige
you shouldn't oblige
they shouldn't oblige 	I shouldn't be obliging
you shouldn't be obliging
she shouldn't be obliging
we shouldn't be obliging
you shouldn't be obliging
they shouldn't be obliging	I shouldn't have obliged
you shouldn't have obliged
she shouldn't have obliged
we shouldn't have obliged
you shouldn't have obliged
they shouldn't have obliged	I shouldn't have been obliging
you shouldn't have been obliging
she shouldn't have been obliging
we shouldn't have been obliging
you shouldn't have been obliging
they shouldn't have been obliging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I oblige?
should you oblige?
should she oblige?
should we oblige?
should you oblige?
should they oblige? 	should I be obliging?
should you be obliging?
should she be obliging?
should we be obliging?
should you be obliging?
should they be obliging? 	should I have obliged?
should you have obliged?
should she have obliged?
should we have obliged?
should you have obliged?
should they have obliged? 	should I have been obliging?
should you have been obliging?
should she have been obliging?
should we have been obliging?
should you have been obliging?
should they have been obliging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I oblige?
shouldn't you oblige?
shouldn't she oblige?
shouldn't we oblige?
shouldn't you oblige?
shouldn't they oblige? 	shouldn't I be obliging?
shouldn't you be obliging?
shouldn't she be obliging?
shouldn't we be obliging?
shouldn't you be obliging?
shouldn't they be obliging? 	shouldn't I have obliged?
shouldn't you have obliged?
shouldn't she have obliged?
shouldn't we have obliged?
shouldn't you have obliged?
shouldn't they have obliged? 	shouldn't I have been obliging?
shouldn't you have been obliging?
shouldn't she have been obliging?
shouldn't we have been obliging?
shouldn't you have been obliging?
shouldn't they have been obliging?