I'll be gainsaying you'll be gainsaying she'll be gainsaying we'll be gainsaying you'll be gainsaying they'll be gainsaying
Future perfect
I'll have gainsaid you'll have gainsaid she'll have gainsaid we'll have gainsaid you'll have gainsaid they'll have gainsaid
Future perfect continuous
I'll have been gainsaying you'll have been gainsaying she'll have been gainsaying we'll have been gainsaying you'll have been gainsaying they'll have been gainsaying
I'd be gainsaying you'd be gainsaying she'd be gainsaying we'd be gainsaying you'd be gainsaying they'd be gainsaying
Past
I'd have gainsaid you'd have gainsaid she'd have gainsaid we'd have gainsaid you'd have gainsaid they'd have gainsaid
Past continuous
I'd have been gainsaying you'd have been gainsaying she'd have been gainsaying we'd have been gainsaying you'd have been gainsaying they'd have been gainsaying