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: 3, 11, ['W', '1479', '1715', 'z', '953', 'f', 'V', '6387', '4293', 'K', 'n', '3275', '6677', 'K', 'S']

nK42936387Vf953z1715