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.

[Q]: 8, 21, ['2381', '5057', 'o', 'M', '7495', '3787', '3877', '5055', '6055', '4145', 'v', 'O', 'K', '361', 'X', 'H', '357', 'H', '7553', 'S', 'R', 'H', '5973']
[A]: RS3557H753HX163KOv541455065505


[Q]: 4, 16, ['M', '1253', 'L', '1997', 'E', 'u', '4953', '1627', '4497', '1839', 'M', 's', '9821', '9159', '845', '6189', 'F', 'G', 'E', '2303', '503']
[A]: 981654895191289sM9381794472613594uE7991


[Q]: 14, 25, ['4855', '1561', '3523', '933', 'G', '9219', '5681', 'v', 'Z', 'R', 'd', 'B', 'F', 'Z', '1507', '8549', 'd', 'w', 'H', '5697', 'q', '5195', '3557', 'w', '2573', 'V', 'C', '6325', 'i', '6977']
[A]:
3752w75535915q7965Hwd94587051Z