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