should tinker
Regular verb: tinker - tinkered- tinkered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tinker
you'd tinker
he'd tinker
we'd tinker
you'd tinker
they'd tinker 	I'd be tinkering
you'd be tinkering
he'd be tinkering
we'd be tinkering
you'd be tinkering
they'd be tinkering	I should've tinkered
you should've tinkered
he 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
he 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
he 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
he 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
he 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
he 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 he tinker?
should we tinker?
should you tinker?
should they tinker? 	should I be tinkering?
should you be tinkering?
should he be tinkering?
should we be tinkering?
should you be tinkering?
should they be tinkering? 	should I have tinkered?
should you have tinkered?
should he 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 he 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 he 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 he 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 he 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 he have been tinkering?
shouldn't we have been tinkering?
shouldn't you have been tinkering?
shouldn't they have been tinkering?