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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 9, 29, ['R', 'z', '7313', 'T', '6827', 'B', 'j', 'K', 'D', 'W', 'E', 'B', '1957', '7993', 'u', 'x', '4129', 'o', '7693', '1797', '4871', 'G', 'f', '1885', '5109', '427', 'U', 'j', 'L']

LjU42751091885fG487117977693o4129xu79931957BEWD