In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

[Q]: 9, 21, ['D', 'j', 'T', '91', 'W', '9709', 'H', '1023', '4595', '1241', '917', '383', '7739', 'G', 'I', 'b', '8401', '7941', 'j', '2713', 'K', '2443', 'E', 'B', '1515', '5141', '1221', '993']
[A]: K3172j14971048bIG937738371914215954


[Q]: 1, 5, ['E', 'h', 'N', '9931', 'F', '9367', 'N', 'K', 'Y', '1449', '8503', '9277', 'k', '9627', 'Q', 'v']
[A]: F1399NhE


[Q]: 1, 8, ['7933', 'D', 'a', '919', '6965', 'r', '3755', 'Z', '3753', 'e', '1503', '9063', 'j', '6397', 'Y', '6259', '1787', '6667', '9847', 'n', 'T', 'Z', 'N', 'o', '1475', '8169', '2591']
[A]:
Z5573r5696919aD3397