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: 8, 13, ['F', '7065', 'j', '4223', 'w', '2155', '7585', '9699', '2137', '6309', 'H', 'x', 'n', 'D', '9437', '1273', 'N', 'X']

nxH630921379699