should unshift
Regular verb: unshift - unshifted- unshifted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should unshift
you should unshift
he should unshift
we should unshift
you should unshift
they should unshift 	I should be unshifting
you should be unshifting
he should be unshifting
we should be unshifting
you should be unshifting
they should be unshifting	I should have unshifted
you should have unshifted
he should have unshifted
we should have unshifted
you should have unshifted
they should have unshifted	I should have been unshifting
you should have been unshifting
he should have been unshifting
we should have been unshifting
you should have been unshifting
they should have been unshifting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not unshift
you should not unshift
he should not unshift
we should not unshift
you should not unshift
they should not unshift 	I should not be unshifting
you should not be unshifting
he should not be unshifting
we should not be unshifting
you should not be unshifting
they should not be unshifting	I should not have unshifted
you should not have unshifted
he should not have unshifted
we should not have unshifted
you should not have unshifted
they should not have unshifted	I should not have been unshifting
you should not have been unshifting
he should not have been unshifting
we should not have been unshifting
you should not have been unshifting
they should not have been unshifting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I unshift?
should you unshift?
should he unshift?
should we unshift?
should you unshift?
should they unshift? 	should I be unshifting?
should you be unshifting?
should he be unshifting?
should we be unshifting?
should you be unshifting?
should they be unshifting? 	should I have unshifted?
should you have unshifted?
should he have unshifted?
should we have unshifted?
should you have unshifted?
should they have unshifted? 	should I have been unshifting?
should you have been unshifting?
should he have been unshifting?
should we have been unshifting?
should you have been unshifting?
should they have been unshifting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not unshift?
should you not unshift?
should he not unshift?
should we not unshift?
should you not unshift?
should they not unshift? 	should I not be unshifting?
should you not be unshifting?
should he not be unshifting?
should we not be unshifting?
should you not be unshifting?
should they not be unshifting? 	should I not have unshifted?
should you not have unshifted?
should he not have unshifted?
should we not have unshifted?
should you not have unshifted?
should they not have unshifted? 	should I not have been unshifting?
should you not have been unshifting?
should he not have been unshifting?
should we not have been unshifting?
should you not have been unshifting?
should they not have been unshifting?