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: 5, 19, ['z', 'b', 'W', '463', '2955', 'B', 's', '9785', '7663', 'D', 'A', 'f', '2643', 'Q', '2377', 'f', 'h', 'U', '2243', 'b', '8555', '6605', 'b', 'H', 'E', '1167', '961', '6283']

2243Uhf2377Q2643fAD76639785sB2955