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: 2, 7, ['w', '1559', '9877', 'J', 'e', '9513', '9453', '213', 'z', 't', 'N', 'R', '235', '3273', 'K', '4611', 'm', '6483', '9839', 'U', 'n', 'A']

94539513eJ98771559