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Future perfect
I'll have sketched you'll have sketched she'll have sketched we'll have sketched you'll have sketched they'll have sketched
Future perfect continuous
I'll have been sketching you'll have been sketching she'll have been sketching we'll have been sketching you'll have been sketching they'll have been sketching
I'd be sketching you'd be sketching she'd be sketching we'd be sketching you'd be sketching they'd be sketching
Past
I'd have sketched you'd have sketched she'd have sketched we'd have sketched you'd have sketched they'd have sketched
Past continuous
I'd have been sketching you'd have been sketching she'd have been sketching we'd have been sketching you'd have been sketching they'd have been sketching