should shift
Regular verb: shift - shifted- shifted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should shift
you should shift
he should shift
we should shift
you should shift
they should shift 	I should be shifting
you should be shifting
he should be shifting
we should be shifting
you should be shifting
they should be shifting	I should have shifted
you should have shifted
he should have shifted
we should have shifted
you should have shifted
they should have shifted	I should have been shifting
you should have been shifting
he should have been shifting
we should have been shifting
you should have been shifting
they should have been shifting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not shift
you should not shift
he should not shift
we should not shift
you should not shift
they should not shift 	I should not be shifting
you should not be shifting
he should not be shifting
we should not be shifting
you should not be shifting
they should not be shifting	I should not have shifted
you should not have shifted
he should not have shifted
we should not have shifted
you should not have shifted
they should not have shifted	I should not have been shifting
you should not have been shifting
he should not have been shifting
we should not have been shifting
you should not have been shifting
they should not have been shifting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I shift?
should you shift?
should he shift?
should we shift?
should you shift?
should they shift? 	should I be shifting?
should you be shifting?
should he be shifting?
should we be shifting?
should you be shifting?
should they be shifting? 	should I have shifted?
should you have shifted?
should he have shifted?
should we have shifted?
should you have shifted?
should they have shifted? 	should I have been shifting?
should you have been shifting?
should he have been shifting?
should we have been shifting?
should you have been shifting?
should they have been shifting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not shift?
should you not shift?
should he not shift?
should we not shift?
should you not shift?
should they not shift? 	should I not be shifting?
should you not be shifting?
should he not be shifting?
should we not be shifting?
should you not be shifting?
should they not be shifting? 	should I not have shifted?
should you not have shifted?
should he not have shifted?
should we not have shifted?
should you not have shifted?
should they not have shifted? 	should I not have been shifting?
should you not have been shifting?
should he not have been shifting?
should we not have been shifting?
should you not have been shifting?
should they not have been shifting?