should tinker
Regular verb: tinker - tinkered- tinkered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tinker
you'd tinker
she'd tinker
we'd tinker
you'd tinker
they'd tinker 	I'd be tinkering
you'd be tinkering
she'd be tinkering
we'd be tinkering
you'd be tinkering
they'd be tinkering	I should've tinkered
you should've tinkered
she should've tinkered
we should've tinkered
you should've tinkered
they should've tinkered	I should've been tinkering
you should've been tinkering
she should've been tinkering
we should've been tinkering
you should've been tinkering
they should've been tinkering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tinker
you shouldn't tinker
she shouldn't tinker
we shouldn't tinker
you shouldn't tinker
they shouldn't tinker 	I shouldn't be tinkering
you shouldn't be tinkering
she shouldn't be tinkering
we shouldn't be tinkering
you shouldn't be tinkering
they shouldn't be tinkering	I shouldn't have tinkered
you shouldn't have tinkered
she shouldn't have tinkered
we shouldn't have tinkered
you shouldn't have tinkered
they shouldn't have tinkered	I shouldn't have been tinkering
you shouldn't have been tinkering
she shouldn't have been tinkering
we shouldn't have been tinkering
you shouldn't have been tinkering
they shouldn't have been tinkering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tinker?
should you tinker?
should she tinker?
should we tinker?
should you tinker?
should they tinker? 	should I be tinkering?
should you be tinkering?
should she be tinkering?
should we be tinkering?
should you be tinkering?
should they be tinkering? 	should I have tinkered?
should you have tinkered?
should she have tinkered?
should we have tinkered?
should you have tinkered?
should they have tinkered? 	should I have been tinkering?
should you have been tinkering?
should she have been tinkering?
should we have been tinkering?
should you have been tinkering?
should they have been tinkering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tinker?
shouldn't you tinker?
shouldn't she tinker?
shouldn't we tinker?
shouldn't you tinker?
shouldn't they tinker? 	shouldn't I be tinkering?
shouldn't you be tinkering?
shouldn't she be tinkering?
shouldn't we be tinkering?
shouldn't you be tinkering?
shouldn't they be tinkering? 	shouldn't I have tinkered?
shouldn't you have tinkered?
shouldn't she have tinkered?
shouldn't we have tinkered?
shouldn't you have tinkered?
shouldn't they have tinkered? 	shouldn't I have been tinkering?
shouldn't you have been tinkering?
shouldn't she have been tinkering?
shouldn't we have been tinkering?
shouldn't you have been tinkering?
shouldn't they have been tinkering?