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: 12, 23, ['X', '2703', '4825', '6231', '4869', 'H', '7731', '1425', 'P', 'd', '9449', 'r', 'd', 'H', 'v', 'n', 'W', '33', 's', 'e', '2149', 'M', 'N', 'Q']

NM2149es33WnvHdr