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, 19, ['g', 'r', '2731', 'Z', 'Z', '4915', 'r', '7221', 'O', 'j', 'W', 'o', '5897', 'Q', '4685', 'I', 'k', '3015', '2515', '1113', '7403', '5897', 'f', 'w', 'g', 'Z', 'H', 'v']

25153015kI4685Q5897oWjO7221r4915ZZ2731r