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, 29, ['5083', 'B', 'Z', 'i', 'P', 'w', 'u', 'u', '9933', '2511', '6601', '7357', 'q', '2387', '2779', 'Q', 's', '2521', '1015', '891', 'f', 'd', '8421', '9393', '969', '1635', '1555', '621', '2311']