should forfeit
Regular verb: forfeit - forfeited- forfeited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd forfeit
you'd forfeit
he'd forfeit
we'd forfeit
you'd forfeit
they'd forfeit 	I'd be forfeiting
you'd be forfeiting
he'd be forfeiting
we'd be forfeiting
you'd be forfeiting
they'd be forfeiting	I should've forfeited
you should've forfeited
he should've forfeited
we should've forfeited
you should've forfeited
they should've forfeited	I should've been forfeiting
you should've been forfeiting
he should've been forfeiting
we should've been forfeiting
you should've been forfeiting
they should've been forfeiting	

Negation 	
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I shouldn't forfeit
you shouldn't forfeit
he shouldn't forfeit
we shouldn't forfeit
you shouldn't forfeit
they shouldn't forfeit 	I shouldn't be forfeiting
you shouldn't be forfeiting
he shouldn't be forfeiting
we shouldn't be forfeiting
you shouldn't be forfeiting
they shouldn't be forfeiting	I shouldn't have forfeited
you shouldn't have forfeited
he shouldn't have forfeited
we shouldn't have forfeited
you shouldn't have forfeited
they shouldn't have forfeited	I shouldn't have been forfeiting
you shouldn't have been forfeiting
he shouldn't have been forfeiting
we shouldn't have been forfeiting
you shouldn't have been forfeiting
they shouldn't have been forfeiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I forfeit?
should you forfeit?
should he forfeit?
should we forfeit?
should you forfeit?
should they forfeit? 	should I be forfeiting?
should you be forfeiting?
should he be forfeiting?
should we be forfeiting?
should you be forfeiting?
should they be forfeiting? 	should I have forfeited?
should you have forfeited?
should he have forfeited?
should we have forfeited?
should you have forfeited?
should they have forfeited? 	should I have been forfeiting?
should you have been forfeiting?
should he have been forfeiting?
should we have been forfeiting?
should you have been forfeiting?
should they have been forfeiting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I forfeit?
shouldn't you forfeit?
shouldn't he forfeit?
shouldn't we forfeit?
shouldn't you forfeit?
shouldn't they forfeit? 	shouldn't I be forfeiting?
shouldn't you be forfeiting?
shouldn't he be forfeiting?
shouldn't we be forfeiting?
shouldn't you be forfeiting?
shouldn't they be forfeiting? 	shouldn't I have forfeited?
shouldn't you have forfeited?
shouldn't he have forfeited?
shouldn't we have forfeited?
shouldn't you have forfeited?
shouldn't they have forfeited? 	shouldn't I have been forfeiting?
shouldn't you have been forfeiting?
shouldn't he have been forfeiting?
shouldn't we have been forfeiting?
shouldn't you have been forfeiting?
shouldn't they have been forfeiting?