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.
Q: 20, 27, ['Q', '9587', '3809', 'p', 'h', '7759', '1193', '1809', 'x', 'E', '5721', 'd', '3739', 'a', 'A', '8797', 'A', '7581', '3269', 'Z', '2885', 'H', 'a', 't', '8167', 'l', 'f', 'm', '5723']
A: 
fl7618taH5882Z