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.
8, 20, ['5129', '6511', 'Y', '6355', 'n', 'T', '3869', '3293', '6751', 'T', '3175', 'J', '7481', 'i', '3657', 'm', 'T', '3963', 'w', '127', '3449', '2133', '2823', 'v', '1641']