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]: 1, 3, ['7635', 'c', 'h', 'D', 'K', '7235', 'e']
[A]: hc5367


[Q]: 4, 16, ['O', 'x', 'E', 'z', 'q', '2235', 'j', 'Q', '9655', '6887', '7651', '4695', 'p', 'M', '7975', 'p', 'u', '7275', 'y', 'w', '9677', 'I', '8609', '3333', '1835', '7137', '2509', '6157', '1805']
[A]: p5797Mp5964156778865569Qj5322qz


[Q]: 2, 2, ['5669', '1879', '4977', 'W', '5673', '2899', '707', 'y', '1439', 'F', '8569', 'G']
[A]:
9781