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: 15, 22, ['N', '791', '8077', 'k', 'T', '171', 'T', 'b', 'w', 'h', '2109', '8001', 's', 'C', 'U', '8653', '3783', '5959', 'W', 'u', '2459', 'v', 'U']

v2459uW595937838653U