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: 7, 14, ['881', 'j', 'z', 'X', '1379', '567', 'm', '2333', 'I', 'R', 'F', '5217', '6873', 'W', 'n', '5373', '9583', 'U', 'P', 'h', '5167', '4439', 'U']

W68735217FRI2333m