LinkedIn Patches 121 answer, 16 July 2026: a 2 by 4 rectangle at row 1, column 1; a 4 by 2 rectangle at row 1, column 3; a 4 by 1 rectangle at row 3, column 3; a 2 by 1 rectangle at row 4, column 3; a 4 by 2 rectangle at row 5, column 1; a 2 by 3 rectangle at row 4, column 5. Answered 07:00 UTC