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]: 2, 3, ['T', '2161', '227']
[EX A]: 7221612

[EX Q]: 2, 9, ['7175', '1487', '4759', '8719', 'f', '9899', '1987', 'h', 'o', '5495', '3665', 'k', 'j', 'C', 'H', 'V', '9443', '1203', 'j', 'p']
[EX A]: oh78919989f917895747841

[EX Q]: 13, 19, ['u', '5919', 'y', 'G', 'R', 'u', '6227', 'O', 'c', '8375', '8105', '9323', 'l', '2577', 'I', 'c', 'g', 'a', 'O', '4565', '8847', 'v', 'j', '9289', '3593', 'M', 'G', 'S', 'Y']
[EX A]:
OagcI7752l