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