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, 8, ['7991', '7999', '8575', '4211', '6003', '2483', '7877', '7249', 'K', '21']
[A]: 94277787384230061124575899971997


[Q]: 1, 2, ['S', 'm', 'j', '6193', '79', '9401', '2469', '7919', '9563', 'l', 'm', 'A', '983', 'M', '6661']
[A]: mS


[Q]: 3, 10, ['t', 'c', '4795', 'Z', 'J', 'e', 'o', 'r', 'e', 'i', '2445', 'P', '185']
[A]:
ieroeJZ5974