should contract
Regular verb: contract - contracted- contracted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd contract
you'd contract
he'd contract
we'd contract
you'd contract
they'd contract 	I'd be contracting
you'd be contracting
he'd be contracting
we'd be contracting
you'd be contracting
they'd be contracting	I should've contracted
you should've contracted
he should've contracted
we should've contracted
you should've contracted
they should've contracted	I should've been contracting
you should've been contracting
he should've been contracting
we should've been contracting
you should've been contracting
they should've been contracting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't contract
you shouldn't contract
he shouldn't contract
we shouldn't contract
you shouldn't contract
they shouldn't contract 	I shouldn't be contracting
you shouldn't be contracting
he shouldn't be contracting
we shouldn't be contracting
you shouldn't be contracting
they shouldn't be contracting	I shouldn't have contracted
you shouldn't have contracted
he shouldn't have contracted
we shouldn't have contracted
you shouldn't have contracted
they shouldn't have contracted	I shouldn't have been contracting
you shouldn't have been contracting
he shouldn't have been contracting
we shouldn't have been contracting
you shouldn't have been contracting
they shouldn't have been contracting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I contract?
should you contract?
should he contract?
should we contract?
should you contract?
should they contract? 	should I be contracting?
should you be contracting?
should he be contracting?
should we be contracting?
should you be contracting?
should they be contracting? 	should I have contracted?
should you have contracted?
should he have contracted?
should we have contracted?
should you have contracted?
should they have contracted? 	should I have been contracting?
should you have been contracting?
should he have been contracting?
should we have been contracting?
should you have been contracting?
should they have been contracting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I contract?
shouldn't you contract?
shouldn't he contract?
shouldn't we contract?
shouldn't you contract?
shouldn't they contract? 	shouldn't I be contracting?
shouldn't you be contracting?
shouldn't he be contracting?
shouldn't we be contracting?
shouldn't you be contracting?
shouldn't they be contracting? 	shouldn't I have contracted?
shouldn't you have contracted?
shouldn't he have contracted?
shouldn't we have contracted?
shouldn't you have contracted?
shouldn't they have contracted? 	shouldn't I have been contracting?
shouldn't you have been contracting?
shouldn't he have been contracting?
shouldn't we have been contracting?
shouldn't you have been contracting?
shouldn't they have been contracting?