Pluperfect continuous
hadn't I been slip-stitch
ing?
hadn't you been slip-stitch
ing?
hadn't he been slip-stitch
ing?
hadn't we been slip-stitch
ing?
hadn't you been slip-stitch
ing?
hadn't they been slip-stitch
ing?
Present
wouldn't I slip-stitch?
wouldn't you slip-stitch?
wouldn't he slip-stitch?
wouldn't we slip-stitch?
wouldn't you slip-stitch?
wouldn't they slip-stitch?