I've been slip-stitching you've been slip-stitching he's been slip-stitching we've been slip-stitching you've been slip-stitching they've been slip-stitching
I'd been slip-stitching you'd been slip-stitching he'd been slip-stitching we'd been slip-stitching you'd been slip-stitching they'd been slip-stitching
I'll be slip-stitching you'll be slip-stitching he'll be slip-stitching we'll be slip-stitching you'll be slip-stitching they'll be slip-stitching
Future perfect
I'll have slip-stitched you'll have slip-stitched he'll have slip-stitched we'll have slip-stitched you'll have slip-stitched they'll have slip-stitched
Future perfect continuous
I'll have been slip-stitching you'll have been slip-stitching he'll have been slip-stitching we'll have been slip-stitching you'll have been slip-stitching they'll have been slip-stitching
I'd be slip-stitching you'd be slip-stitching he'd be slip-stitching we'd be slip-stitching you'd be slip-stitching they'd be slip-stitching
Past
I'd have slip-stitched you'd have slip-stitched he'd have slip-stitched we'd have slip-stitched you'd have slip-stitched they'd have slip-stitched
Past continuous
I'd have been slip-stitching you'd have been slip-stitching he'd have been slip-stitching we'd have been slip-stitching you'd have been slip-stitching they'd have been slip-stitching