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.

Example Input: 3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']
Example Output: 19277718

Example Input: 2, 4, ['o', '5393', 'p', 'h', '5617', 'F', 'I', 'a']
Example Output: hp3935

Example Input: 5, 12, ['J', 'H', 'I', '4361', '7771', 'G', '2375', '9025', '2773', '6613', 'g', 'G', '2025', 'W', 'E', 'A', '9833', '6993', 't']
Example Output:
Gg3166377252095732G1777