Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 20, 21, ['7441', '1849', '8067', '1595', '2165', 'p', '6773', 'C', '393', '2673', '6745', 'r', '9047', '9575', '2137', 'u', '2923', 'J', 'l', 'L', 'r', 'c', '1779', '7517', '3819']

Lr