I'd be devising you'd be devising he'd be devising we'd be devising you'd be devising they'd be devising
Perfect
I should've devised you should've devised he should've devised we should've devised you should've devised they should've devised
V-ing perfect
I should've been devising you should've been devising he should've been devising we should've been devising you should've been devising they should've been devising
Negation
Simple form
I shouldn't devise you shouldn't devise he shouldn't devise we shouldn't devise you shouldn't devise they shouldn't devise
V-ing form
I shouldn't be devising you shouldn't be devising he shouldn't be devising we shouldn't be devising you shouldn't be devising they shouldn't be devising
Perfect
I shouldn't have devised you shouldn't have devised he shouldn't have devised we shouldn't have devised you shouldn't have devised they shouldn't have devised
V-ing perfect
I shouldn't have been devising you shouldn't have been devising he shouldn't have been devising we shouldn't have been devising you shouldn't have been devising they shouldn't have been devising
Interrogative form
Simple form
should I devise? should you devise? should he devise? should we devise? should you devise? should they devise?
V-ing form
should I be devising? should you be devising? should he be devising? should we be devising? should you be devising? should they be devising?
Perfect
should I have devised? should you have devised? should he have devised? should we have devised? should you have devised? should they have devised?
V-ing perfect
should I have been devising? should you have been devising? should he have been devising? should we have been devising? should you have been devising? should they have been devising?
Interro-negative form
Simple form
shouldn't I devise? shouldn't you devise? shouldn't he devise? shouldn't we devise? shouldn't you devise? shouldn't they devise?
V-ing form
shouldn't I be devising? shouldn't you be devising? shouldn't he be devising? shouldn't we be devising? shouldn't you be devising? shouldn't they be devising?
Perfect
shouldn't I have devised? shouldn't you have devised? shouldn't he have devised? shouldn't we have devised? shouldn't you have devised? shouldn't they have devised?
V-ing perfect
shouldn't I have been devising? shouldn't you have been devising? shouldn't he have been devising? shouldn't we have been devising? shouldn't you have been devising? shouldn't they have been devising?