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.
18, 18, ['5639', '9235', 'O', 'o', '2349', 'C', '4887', '6013', 'K', '6455', 'D', '8311', 'f', '4119', '5181', '5339', 't', 'o', '2743', '4671', '5117', '2691', 'F', '7389']