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.

2, 8, ['9691', 'u', 'o', '4027', 'q', '7799', 'v', '6433', '6817', 'u', 'w', 'Z']
3346v9977q7204ou

4, 22, ['5409', 'h', 'u', 'C', 'b', '7979', 'M', '6477', 'k', 'G', '1997', '9033', '2637', 'l', 'y', '8427', '5107', '6743', '5677', '2471', '2225', 'E', 'Q']
E522217427765347670157248yl736233097991Gk7746M9797bC

17, 21, ['D', 'Q', 'L', 'l', 'P', 'a', 'z', 'c', 'U', '73', 'M', '1279', 'u', 'x', 'o', 't', 'F', '3089', '6059', 'x', '2607', '4965', '845', 'T', 'l', 'X', 'r']

7062x95069803F