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, 20, ['b', 'e', '6905', 'G', 'Z', 'a', 'x', 'A', '2105', '1793', '2521', '7993', '7093', 'S', 'i', 'W', 'E', 'l', '3835', 'm', 'n', 'M', 'N', 'p', '9639', 'O', '4099', '341', '3329']

iWEl3835m