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]: 4, 7, ['1247', 's', 'J', 'w', 'X', '7211', 'c']
[EX A]: c1127Xw

[EX Q]: 5, 25, ['8867', 'K', '315', 's', '8813', 'N', 'E', 'M', '1411', '6741', '2403', '7973', 'P', '2199', '9551', 'S', 'W', '4163', '7209', 'E', '2113', 'J', '8953', '1319', 'b', '7627', 'j', 'r', '6323', '1101']
[EX A]: b91313598J3112E90273614WS15599912P3797304214761141MEN3188

[EX Q]: 3, 10, ['W', 'b', '5693', '1527', 'f', 'A', '3197', '2669', 's', 'Y', 'k', '7301', '7159']
[EX A]:
Ys96627913Af72513965