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, 25, ['U', 'm', 'J', 'n', 'K', 'p', '3021', '4821', 'l', '5417', 'x', 'i', 't', '5667', 'J', '1899', 'v', 'J', 'x', '8627', 's', 't', 'V', 'X', 'g', 'f', 'r', '583']

J1899vJx8627stVXg