I've been euthanatising you've been euthanatising he's been euthanatising we've been euthanatising you've been euthanatising they've been euthanatising
I'll be euthanatising you'll be euthanatising he'll be euthanatising we'll be euthanatising you'll be euthanatising they'll be euthanatising
Future perfect
I'll have euthanatised you'll have euthanatised he'll have euthanatised we'll have euthanatised you'll have euthanatised they'll have euthanatised
Future perfect continuous
I'll have been euthanatising you'll have been euthanatising he'll have been euthanatising we'll have been euthanatising you'll have been euthanatising they'll have been euthanatising
I'd be euthanatising you'd be euthanatising he'd be euthanatising we'd be euthanatising you'd be euthanatising they'd be euthanatising
Past
I'd have euthanatised you'd have euthanatised he'd have euthanatised we'd have euthanatised you'd have euthanatised they'd have euthanatised
Past continuous
I'd have been euthanatising you'd have been euthanatising he'd have been euthanatising we'd have been euthanatising you'd have been euthanatising they'd have been euthanatising