Extended data:
Special symbols refer to symbols that use fewer characters than traditional or commonly used symbols and are difficult to input directly, such as mathematical symbols; Unit symbol; Tab, etc.
①②③④⑤⑥⑦⑧⑨⑩? One two three four five six seven eight nine10 (1) (3) (3) (3) (5) (6) (7) (8) (3) (4) (3) (3) (4) (3)