I'd be spelling you'd be spelling she'd be spelling we'd be spelling you'd be spelling they'd be spelling
Perfect
I should've spelled, spelt you should've spelled, spelt she should've spelled, spelt we should've spelled, spelt you should've spelled, spelt they should've spelled, spelt
V-ing perfect
I should've been spelling you should've been spelling she should've been spelling we should've been spelling you should've been spelling they should've been spelling
Negation
Simple form
I shouldn't spell you shouldn't spell she shouldn't spell we shouldn't spell you shouldn't spell they shouldn't spell
V-ing form
I shouldn't be spelling you shouldn't be spelling she shouldn't be spelling we shouldn't be spelling you shouldn't be spelling they shouldn't be spelling
Perfect
I shouldn't have spelled, spelt you shouldn't have spelled, spelt she shouldn't have spelled, spelt we shouldn't have spelled, spelt you shouldn't have spelled, spelt they shouldn't have spelled, spelt
V-ing perfect
I shouldn't have been spelling you shouldn't have been spelling she shouldn't have been spelling we shouldn't have been spelling you shouldn't have been spelling they shouldn't have been spelling
Interrogative form
Simple form
should I spell? should you spell? should she spell? should we spell? should you spell? should they spell?
V-ing form
should I be spelling? should you be spelling? should she be spelling? should we be spelling? should you be spelling? should they be spelling?
Perfect
should I have spelled, spelt? should you have spelled, spelt? should she have spelled, spelt? should we have spelled, spelt? should you have spelled, spelt? should they have spelled, spelt?
V-ing perfect
should I have been spelling? should you have been spelling? should she have been spelling? should we have been spelling? should you have been spelling? should they have been spelling?
Interro-negative form
Simple form
shouldn't I spell? shouldn't you spell? shouldn't she spell? shouldn't we spell? shouldn't you spell? shouldn't they spell?
V-ing form
shouldn't I be spelling? shouldn't you be spelling? shouldn't she be spelling? shouldn't we be spelling? shouldn't you be spelling? shouldn't they be spelling?
Perfect
shouldn't I have spelled, spelt? shouldn't you have spelled, spelt? shouldn't she have spelled, spelt? shouldn't we have spelled, spelt? shouldn't you have spelled, spelt? shouldn't they have spelled, spelt?
V-ing perfect
shouldn't I have been spelling? shouldn't you have been spelling? shouldn't she have been spelling? shouldn't we have been spelling? shouldn't you have been spelling? shouldn't they have been spelling?