should supplement
Regular verb: supplement - supplemented- supplemented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd supplement
you'd supplement
she'd supplement
we'd supplement
you'd supplement
they'd supplement 	I'd be supplementing
you'd be supplementing
she'd be supplementing
we'd be supplementing
you'd be supplementing
they'd be supplementing	I should've supplemented
you should've supplemented
she should've supplemented
we should've supplemented
you should've supplemented
they should've supplemented	I should've been supplementing
you should've been supplementing
she should've been supplementing
we should've been supplementing
you should've been supplementing
they should've been supplementing	

Negation 	
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I shouldn't supplement
you shouldn't supplement
she shouldn't supplement
we shouldn't supplement
you shouldn't supplement
they shouldn't supplement 	I shouldn't be supplementing
you shouldn't be supplementing
she shouldn't be supplementing
we shouldn't be supplementing
you shouldn't be supplementing
they shouldn't be supplementing	I shouldn't have supplemented
you shouldn't have supplemented
she shouldn't have supplemented
we shouldn't have supplemented
you shouldn't have supplemented
they shouldn't have supplemented	I shouldn't have been supplementing
you shouldn't have been supplementing
she shouldn't have been supplementing
we shouldn't have been supplementing
you shouldn't have been supplementing
they shouldn't have been supplementing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I supplement?
should you supplement?
should she supplement?
should we supplement?
should you supplement?
should they supplement? 	should I be supplementing?
should you be supplementing?
should she be supplementing?
should we be supplementing?
should you be supplementing?
should they be supplementing? 	should I have supplemented?
should you have supplemented?
should she have supplemented?
should we have supplemented?
should you have supplemented?
should they have supplemented? 	should I have been supplementing?
should you have been supplementing?
should she have been supplementing?
should we have been supplementing?
should you have been supplementing?
should they have been supplementing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I supplement?
shouldn't you supplement?
shouldn't she supplement?
shouldn't we supplement?
shouldn't you supplement?
shouldn't they supplement? 	shouldn't I be supplementing?
shouldn't you be supplementing?
shouldn't she be supplementing?
shouldn't we be supplementing?
shouldn't you be supplementing?
shouldn't they be supplementing? 	shouldn't I have supplemented?
shouldn't you have supplemented?
shouldn't she have supplemented?
shouldn't we have supplemented?
shouldn't you have supplemented?
shouldn't they have supplemented? 	shouldn't I have been supplementing?
shouldn't you have been supplementing?
shouldn't she have been supplementing?
shouldn't we have been supplementing?
shouldn't you have been supplementing?
shouldn't they have been supplementing?