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.

[EX Q]: 10, 27, ['z', '7203', 'd', '1795', '45', '1803', 'L', '2839', '6285', 'W', '1969', 'x', '6565', '8849', '6091', 'M', '7925', '37', 'h', '381', '59', 'O', '3283', 'u', '9831', 'Y', '5701', '7249', 'w']
[EX A]: 1075Y1389u3823O95183h735297M190694885656x9691W

[EX Q]: 1, 5, ['7115', '3109', '3805', '6831', '6897', 'y', 'b']
[EX A]: 79861386508390135117

[EX Q]: 2, 14, ['713', '7801', '7179', 'N', '3361', 'x', '4773', '9745', 'A', 'q', 'c', 'n', '8183', 'x', 's']
[EX A]:
x3818ncqA54793774x1633N97171087