2 ȷȷ LATIN SMALL LETTER DOTLESS J
3 ˙˙ DOT ABOVE
4 ‾‾ OVERLINE
5 ℏℏℏ PLANCK CONSTANT OVER TWO PI
6 ℘℘ SCRIPT CAPITAL P
7 ↕↕ UP DOWN ARROW
8 ⇕⇕ UP DOWN DOUBLE ARROW
9 ∏∏ N-ARY PRODUCT
10 ∐∐ N-ARY COPRODUCT
11 ∑∑ N-ARY SUMMATION
12 ⊄⊄ NOT A SUBSET OF
13 ⊅⊅ NOT A SUPERSET OF
14 ⎛⎛ LEFT PARENTHESIS UPPER HOOK
15 ⎜⎜ LEFT PARENTHESIS EXTENSION
16 ⎝⎝ LEFT PARENTHESIS LOWER HOOK
17 ⎞⎞ RIGHT PARENTHESIS UPPER HOOK
18 ⎟⎟ RIGHT PARENTHESIS EXTENSION
19 ⎠⎠ RIGHT PARENTHESIS LOWER HOOK
20 ⎡⎡ LEFT SQUARE BRACKET UPPER CORNER
21 ⎢⎢ LEFT SQUARE BRACKET EXTENSION
22 ⎣⎣ LEFT SQUARE BRACKET LOWER CORNER
23 ⎤⎤ RIGHT SQUARE BRACKET UPPER CORNER
24 ⎥⎥ RIGHT SQUARE BRACKET EXTENSION
25 ⎦⎦ RIGHT SQUARE BRACKET LOWER CORNER
26 ⎧⎧ LEFT CURLY BRACKET UPPER HOOK
27 ⎨⎨ LEFT CURLY BRACKET MIDDLE PIECE
28 ⎩⎩ LEFT CURLY BRACKET LOWER HOOK
29 ⎪⎪⎪⎪ CURLY BRACKET EXTENSION
30 ⎫⎫ RIGHT CURLY BRACKET UPPER HOOK
31 ⎬⎬ RIGHT CURLY BRACKET MIDDLE PIECE
32 ⎭⎭ RIGHT CURLY BRACKET LOWER HOOK
33 ♠♠ BLACK SPADE SUIT
34 ♣♣ BLACK CLUB SUIT
35 ♥♥ BLACK HEART SUIT
36 ♦♦ BLACK DIAMOND SUIT
37 ✓✓ CHECK MARK