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

8, 9, ['W', '1701', 'c', '3565', 'W', '687', 'b', 'o', 's', '3041', '4325', 'A', '2405', '5087', 'y', 'x', '2017', 'Y', 'U']
so

7, 11, ['8091', 'b', '101', 'Z', 'D', '6957', 'F', '1837', 'q', 'J', 'P', '6169', '9111', 'Z']

PJq1837F