should crinkle
Regular verb: crinkle - crinkled- crinkled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should crinkle
you should crinkle
she should crinkle
we should crinkle
you should crinkle
they should crinkle 	I should be crinkling
you should be crinkling
she should be crinkling
we should be crinkling
you should be crinkling
they should be crinkling	I should have crinkled
you should have crinkled
she should have crinkled
we should have crinkled
you should have crinkled
they should have crinkled	I should have been crinkling
you should have been crinkling
she should have been crinkling
we should have been crinkling
you should have been crinkling
they should have been crinkling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not crinkle
you should not crinkle
she should not crinkle
we should not crinkle
you should not crinkle
they should not crinkle 	I should not be crinkling
you should not be crinkling
she should not be crinkling
we should not be crinkling
you should not be crinkling
they should not be crinkling	I should not have crinkled
you should not have crinkled
she should not have crinkled
we should not have crinkled
you should not have crinkled
they should not have crinkled	I should not have been crinkling
you should not have been crinkling
she should not have been crinkling
we should not have been crinkling
you should not have been crinkling
they should not have been crinkling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I crinkle?
should you crinkle?
should she crinkle?
should we crinkle?
should you crinkle?
should they crinkle? 	should I be crinkling?
should you be crinkling?
should she be crinkling?
should we be crinkling?
should you be crinkling?
should they be crinkling? 	should I have crinkled?
should you have crinkled?
should she 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 she 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 	
should I not crinkle?
should you not crinkle?
should she not crinkle?
should we not crinkle?
should you not crinkle?
should they not crinkle? 	should I not be crinkling?
should you not be crinkling?
should she not be crinkling?
should we not be crinkling?
should you not be crinkling?
should they not be crinkling? 	should I not have crinkled?
should you not have crinkled?
should she not have crinkled?
should we not have crinkled?
should you not have crinkled?
should they not have crinkled? 	should I not have been crinkling?
should you not have been crinkling?
should she not have been crinkling?
should we not have been crinkling?
should you not have been crinkling?
should they not have been crinkling?