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.
2, 20, ['O', 'd', 'H', 'I', 'H', 'V', '1027', 'O', 'd', '411', '8715', '6783', 'X', 'o', '4001', '4541', '7211', 'y', 'Z', 'Q', '7053']