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.

[EX Q]: 1, 4, ['s', 'n', '6721', 'W', 'H']
[EX A]: W6721ns

[EX Q]: 15, 29, ['w', '5845', '5777', 'V', '7279', '3285', '4985', 'v', 'A', '2911', 'J', 'w', 'f', 'Z', '5657', '9001', '1447', '4845', '2561', '7819', '33', 'F', 'y', '3849', 'S', '8987', 'U', '7975', '1775', 'x']
[EX A]: 17757975U8987S3849yF33781925614845144790015657

[EX Q]: 1, 22, ['1427', 'w', 'O', 'v', 'x', 'v', '7399', 'O', 'c', 'o', '5241', 'A', '103', '4727', 'f', 'd', '2121', '3001', 'd', 'x', '4001', '8443']
[EX A]:
84434001xd30012121df4727103A5241ocO7399vxvOw1427