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: 16, 17, ['R', '2693', '3101', '5143', '2667', '5681', '6991', 'U', '623', 'J', '1815', 'l', 'l', 'Y', '3521', 'D', '5531', '6353', 'e', '6949', 'f', '6853', 'B']

D5531