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: 15, 30, ['623', '331', '8121', '8493', 'A', 'i', 'J', 'T', '231', '1009', '5833', '4329', 'e', '3781', 'C', 'H', 'w', 'n', 'a', 'H', 'K', 'c', 'L', '1515', '5351', '8671', 'g', 'm', '8471', 'D']

CHwnaHKcL151553518671gm8471D