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: 13, 21, ['S', 'b', 'a', 'x', 'g', '333', '9593', 'e', 'b', '9395', '8035', '1533', 'R', 'T', 'z', '6617', 'y', 'q', 'D', 'X', 'P', 'W', 'R', 'E', '9299']

RTz6617yqDXP