should crinkle
Regular verb: crinkle - crinkled- crinkled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd crinkle
you'd crinkle
he'd crinkle
we'd crinkle
you'd crinkle
they'd crinkle 	I'd be crinkling
you'd be crinkling
he'd be crinkling
we'd be crinkling
you'd be crinkling
they'd be crinkling	I should've crinkled
you should've crinkled
he should've crinkled
we should've crinkled
you should've crinkled
they should've crinkled	I should've been crinkling
you should've been crinkling
he should've been crinkling
we should've been crinkling
you should've been crinkling
they should've been crinkling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't crinkle
you shouldn't crinkle
he shouldn't crinkle
we shouldn't crinkle
you shouldn't crinkle
they shouldn't crinkle 	I shouldn't be crinkling
you shouldn't be crinkling
he shouldn't be crinkling
we shouldn't be crinkling
you shouldn't be crinkling
they shouldn't be crinkling	I shouldn't have crinkled
you shouldn't have crinkled
he shouldn't have crinkled
we shouldn't have crinkled
you shouldn't have crinkled
they shouldn't have crinkled	I shouldn't have been crinkling
you shouldn't have been crinkling
he shouldn't have been crinkling
we shouldn't have been crinkling
you shouldn't have been crinkling
they shouldn't have been crinkling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I crinkle?
should you crinkle?
should he crinkle?
should we crinkle?
should you crinkle?
should they crinkle? 	should I be crinkling?
should you be crinkling?
should he be crinkling?
should we be crinkling?
should you be crinkling?
should they be crinkling? 	should I have crinkled?
should you have crinkled?
should he have crinkled?
should we have crinkled?
should you have crinkled?
should they have crinkled? 	should I have been crinkling?
should you have been crinkling?
should he have been crinkling?
should we have been crinkling?
should you have been crinkling?
should they have been crinkling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I crinkle?
shouldn't you crinkle?
shouldn't he crinkle?
shouldn't we crinkle?
shouldn't you crinkle?
shouldn't they crinkle? 	shouldn't I be crinkling?
shouldn't you be crinkling?
shouldn't he be crinkling?
shouldn't we be crinkling?
shouldn't you be crinkling?
shouldn't they be crinkling? 	shouldn't I have crinkled?
shouldn't you have crinkled?
shouldn't he have crinkled?
shouldn't we have crinkled?
shouldn't you have crinkled?
shouldn't they have crinkled? 	shouldn't I have been crinkling?
shouldn't you have been crinkling?
shouldn't he have been crinkling?
shouldn't we have been crinkling?
shouldn't you have been crinkling?
shouldn't they have been crinkling?