I'll be diffusing you'll be diffusing he'll be diffusing we'll be diffusing you'll be diffusing they'll be diffusing
Future perfect
I'll have diffused you'll have diffused he'll have diffused we'll have diffused you'll have diffused they'll have diffused
Future perfect continuous
I'll have been diffusing you'll have been diffusing he'll have been diffusing we'll have been diffusing you'll have been diffusing they'll have been diffusing
I'd be diffusing you'd be diffusing he'd be diffusing we'd be diffusing you'd be diffusing they'd be diffusing
Past
I'd have diffused you'd have diffused he'd have diffused we'd have diffused you'd have diffused they'd have diffused
Past continuous
I'd have been diffusing you'd have been diffusing he'd have been diffusing we'd have been diffusing you'd have been diffusing they'd have been diffusing