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.

16, 20, ['D', 'N', 'r', 'F', 'G', 'p', '4865', 'c', '7743', '6781', '8771', 'o', 's', '2061', '8445', 'O', 't', 'y', 'n', 'p', '5101']
pnytO

1, 8, ['7425', 'P', 'I', '9705', '1823', '4957', 'c', 'u', '5347', '8853', 'A', 'L', 'W']
uc495718239705IP7425

6, 15, ['V', 'F', 'Z', '7003', 'Q', 'Q', 'b', 'L', 'M', '6307', 'B', '4669', 'l', 'm', '47']

47ml4669B6307MLbQ