I'll be undressing you'll be undressing she'll be undressing we'll be undressing you'll be undressing they'll be undressing
Future perfect
I'll have undressed you'll have undressed she'll have undressed we'll have undressed you'll have undressed they'll have undressed
Future perfect continuous
I'll have been undressing you'll have been undressing she'll have been undressing we'll have been undressing you'll have been undressing they'll have been undressing
I'd be undressing you'd be undressing she'd be undressing we'd be undressing you'd be undressing they'd be undressing
Past
I'd have undressed you'd have undressed she'd have undressed we'd have undressed you'd have undressed they'd have undressed
Past continuous
I'd have been undressing you'd have been undressing she'd have been undressing we'd have been undressing you'd have been undressing they'd have been undressing