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, 16, ['u', 'K', '1337', 'H', 'd', 'W', '2957', '7439', 'f', '4407', '1841', 'w', 'C', 'n', 'q', 't', 'P', '7245', 'A', '9049', 'a', 'O', 'V', 'F', 'X']

tqnCw18414407f74392957