Write a function find$\_$substrings$($s$)$ that takes a string s as input and returns a list of all possible substrings of that string. For example, if the input is "abc", the function should return $["$a$","$ab$",$ "abc", $"$b$","$bc$","$c$"].$ Hint: you can use nested loops. Outer Loop: Think about how you can use an outer loop to select the starting index of the substring. Inner Loop: Use an inner loop to select the ending index of the substring, which should always be greater than the starting index. Hint: Remember that you can extract substrings from the original string using slicing $($e$.$g$.,$ s$[$start:end$]).$ Use a list to store each substring you create. $($append$())$