l am not able to understand how to use to the string function as requirement below

from this table as example at lest two string function from above

[7] Write a DIY (Do It Yourself) query of your own design that process records from the Student table and uses at least two of the following MySQL String functions: INSERT, INSTR, LOCATE, REPLACE, STRCMP, SUBSTR. Can you also use other string functions if you want, but they must be in addition to two of the above You can do research on the MySQL String functions here: s.ht Neatly format the output from your query. Write a sentence explaining the purpose of your query. Don't tell me how you did it, I can see that by looking at your SQL. Tell me its purpose