I should twinkle you should twinkle she should twinkle we should twinkle you should twinkle they should twinkle
V-ing form
I should be twinkling you should be twinkling she should be twinkling we should be twinkling you should be twinkling they should be twinkling
Perfect
I should have twinkled you should have twinkled she should have twinkled we should have twinkled you should have twinkled they should have twinkled
V-ing perfect
I should have been twinkling you should have been twinkling she should have been twinkling we should have been twinkling you should have been twinkling they should have been twinkling
Negation
Simple form
I should not twinkle you should not twinkle she should not twinkle we should not twinkle you should not twinkle they should not twinkle
V-ing form
I should not be twinkling you should not be twinkling she should not be twinkling we should not be twinkling you should not be twinkling they should not be twinkling
Perfect
I should not have twinkled you should not have twinkled she should not have twinkled we should not have twinkled you should not have twinkled they should not have twinkled
V-ing perfect
I should not have been twinkling you should not have been twinkling she should not have been twinkling we should not have been twinkling you should not have been twinkling they should not have been twinkling
Interrogative form
Simple form
should I twinkle? should you twinkle? should she twinkle? should we twinkle? should you twinkle? should they twinkle?
V-ing form
should I be twinkling? should you be twinkling? should she be twinkling? should we be twinkling? should you be twinkling? should they be twinkling?
Perfect
should I have twinkled? should you have twinkled? should she have twinkled? should we have twinkled? should you have twinkled? should they have twinkled?
V-ing perfect
should I have been twinkling? should you have been twinkling? should she have been twinkling? should we have been twinkling? should you have been twinkling? should they have been twinkling?
Interro-negative form
Simple form
should I not twinkle? should you not twinkle? should she not twinkle? should we not twinkle? should you not twinkle? should they not twinkle?
V-ing form
should I not be twinkling? should you not be twinkling? should she not be twinkling? should we not be twinkling? should you not be twinkling? should they not be twinkling?
Perfect
should I not have twinkled? should you not have twinkled? should she not have twinkled? should we not have twinkled? should you not have twinkled? should they not have twinkled?
V-ing perfect
should I not have been twinkling? should you not have been twinkling? should she not have been twinkling? should we not have been twinkling? should you not have been twinkling? should they not have been twinkling?