I'd be marbling you'd be marbling she'd be marbling we'd be marbling you'd be marbling they'd be marbling
Perfect
I should've marbled you should've marbled she should've marbled we should've marbled you should've marbled they should've marbled
V-ing perfect
I should've been marbling you should've been marbling she should've been marbling we should've been marbling you should've been marbling they should've been marbling
Negation
Simple form
I shouldn't marble you shouldn't marble she shouldn't marble we shouldn't marble you shouldn't marble they shouldn't marble
V-ing form
I shouldn't be marbling you shouldn't be marbling she shouldn't be marbling we shouldn't be marbling you shouldn't be marbling they shouldn't be marbling
Perfect
I shouldn't have marbled you shouldn't have marbled she shouldn't have marbled we shouldn't have marbled you shouldn't have marbled they shouldn't have marbled
V-ing perfect
I shouldn't have been marbling you shouldn't have been marbling she shouldn't have been marbling we shouldn't have been marbling you shouldn't have been marbling they shouldn't have been marbling
Interrogative form
Simple form
should I marble? should you marble? should she marble? should we marble? should you marble? should they marble?
V-ing form
should I be marbling? should you be marbling? should she be marbling? should we be marbling? should you be marbling? should they be marbling?
Perfect
should I have marbled? should you have marbled? should she have marbled? should we have marbled? should you have marbled? should they have marbled?
V-ing perfect
should I have been marbling? should you have been marbling? should she have been marbling? should we have been marbling? should you have been marbling? should they have been marbling?
Interro-negative form
Simple form
shouldn't I marble? shouldn't you marble? shouldn't she marble? shouldn't we marble? shouldn't you marble? shouldn't they marble?
V-ing form
shouldn't I be marbling? shouldn't you be marbling? shouldn't she be marbling? shouldn't we be marbling? shouldn't you be marbling? shouldn't they be marbling?
Perfect
shouldn't I have marbled? shouldn't you have marbled? shouldn't she have marbled? shouldn't we have marbled? shouldn't you have marbled? shouldn't they have marbled?
V-ing perfect
shouldn't I have been marbling? shouldn't you have been marbling? shouldn't she have been marbling? shouldn't we have been marbling? shouldn't you have been marbling? shouldn't they have been marbling?