LinkedIn Patches 4 answer, 21 March 2026: a 1 by 5 rectangle at row 1, column 1; a 3 by 3 rectangle at row 1, column 4; a 1 by 5 rectangle at row 1, column 2; a 1 by 3 rectangle at row 1, column 3; a 3 by 1 rectangle at row 4, column 3; a 3 by 1 rectangle at row 5, column 3; a 5 by 1 rectangle at row 6, column 1; a 1 by 3 rectangle at row 4, column 6. Answered 07:00 UTC