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, 12, ['I', 'G', 'u', 'S', '9615', 't', 'p', 'P', 'R', 'v', '8819', '5379', 'I', '1165', '4545', '3117', '1577', 'y', 'W', 'R', 'O']
[EX A]: 97359188vRPpt5169S

[EX Q]: 5, 9, ['7453', '7415', 's', 'O', '1161', 'G', 'N', '5925', '3367', 'f', '7739', 'b', 'y', 'o', '2431', 'Y']
[EX A]: 76335295NG1611

[EX Q]: 3, 14, ['731', '4583', 'T', 'i', '643', '3827', 'y', '2815', '4581', '4433', 'a', '3741', 'j', 'u', '9771', 'H', 'Q', '8985', 'D', 'J', 'd', 'n', 'Z', '1151']
[EX A]:
uj1473a334418545182y7283346iT