I'll be disgruntling you'll be disgruntling he'll be disgruntling we'll be disgruntling you'll be disgruntling they'll be disgruntling
Future perfect
I'll have disgruntled you'll have disgruntled he'll have disgruntled we'll have disgruntled you'll have disgruntled they'll have disgruntled
Future perfect continuous
I'll have been disgruntling you'll have been disgruntling he'll have been disgruntling we'll have been disgruntling you'll have been disgruntling they'll have been disgruntling
I'd be disgruntling you'd be disgruntling he'd be disgruntling we'd be disgruntling you'd be disgruntling they'd be disgruntling
Past
I'd have disgruntled you'd have disgruntled he'd have disgruntled we'd have disgruntled you'd have disgruntled they'd have disgruntled
Past continuous
I'd have been disgruntling you'd have been disgruntling he'd have been disgruntling we'd have been disgruntling you'd have been disgruntling they'd have been disgruntling