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: Consider Input: 12, 21, ['e', 'C', '1919', '1409', 'C', '5215', '9709', '1457', 'o', '4769', 'M', '9825', 'M', '1129', '7783', 'S', 'g', '6493', 'P', '6791', 'z', 'F', 'B', 's', 'V', 'N', 'k']

Output: z6791P6493gS77831129M9825


Input: Consider Input: 3, 3, ['2789', '6611', '5143']

Output: 5143


Input: Consider Input: 1, 2, ['2407', '9373', 'D', 'd', 'H', 'M', '3401', '4795', '643', '1699']


Output: 93732407