I'd be forfeiting you'd be forfeiting he'd be forfeiting we'd be forfeiting you'd be forfeiting they'd be forfeiting
Perfect
I should've forfeited you should've forfeited he should've forfeited we should've forfeited you should've forfeited they should've forfeited
V-ing perfect
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
Simple form
I shouldn't forfeit you shouldn't forfeit he shouldn't forfeit we shouldn't forfeit you shouldn't forfeit they shouldn't forfeit
V-ing form
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
Perfect
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
V-ing perfect
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
should I forfeit? should you forfeit? should he forfeit? should we forfeit? should you forfeit? should they forfeit?
V-ing form
should I be forfeiting? should you be forfeiting? should he be forfeiting? should we be forfeiting? should you be forfeiting? should they be forfeiting?
Perfect
should I have forfeited? should you have forfeited? should he have forfeited? should we have forfeited? should you have forfeited? should they have forfeited?
V-ing perfect
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
shouldn't I forfeit? shouldn't you forfeit? shouldn't he forfeit? shouldn't we forfeit? shouldn't you forfeit? shouldn't they forfeit?
V-ing form
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?
Perfect
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?
V-ing perfect
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?