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.

15, 18, ['2157', 'P', 'n', '5155', 'L', 'P', 's', '5401', 'c', 'T', 'h', '3801', 'S', 'c', 'V', 'P', 'l', 'G', 'j', '839', '6383', 'C']
GlPV

12, 14, ['8471', '6883', '8267', 'D', '385', 'Q', '6725', '1239', '2767', '7219', '4423', '5391', '8513', '5963']
596385135391

5, 5, ['4649', '9657', '623', '6231', 'M']

M