d="M 7.5 4 C 5.5609917 4 4 5.5609917 4 7.5 C 4 9.4390083 5.5609917 11 7.5 11 C 9.4390083 11 11 9.4390083 11 7.5 C 11 5.5609917 9.4390083 4 7.5 4 z M 13 4 L 13 11 L 20 11 L 20 4 L 13 4 z M 5 13 L 5 20 L 10 20 L 10 13 L 5 13 z M 16 13 L 12 19 L 20 19 L 16 13 z "