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]: 3, 8, ['s', '8395', '7689', 'x', 'P', '5953', 'X', 'D']
[EX A]: DX3595Px9867

[EX Q]: 1, 9, ['v', '289', 'O', 'w', 'y', 'r', 's', 'T', '659', 'y', 'a', '9161', 'Y', '5075', 'M', 'L', '5915']
[EX A]: 956TsrywO982v

[EX Q]: 7, 9, ['l', '6829', 'i', '9493', '6793', '5667', '725', 's', 'G', '6245', '3719', 'Y', '1859', 'x', 'D', '6757', '371', '5897', 'Q', 't', 'g', '2777', '3463', '8059']
[EX A]:
Gs527