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: 3, 7, ['P', 'P', 'H', 'r', '3563', 'n', 'M', '1577', '6453']

A: Mn3653rH
****
Q: 5, 15, ['U', 'z', '9255', 'F', 'G', '7403', '6287', 'm', 'P', '4715', '1613', 'G', '1911', 'S', '8823', '9415', 'z', '6359', '1225', 'T', 'z', '1557', 'r', 'M', 'i', '5047', 'b', 'W']

A: 3288S1191G31615174Pm78263047G
****
Q: 7, 7, ['x', 'c', '5943', 't', 'h', '4991', 'E', '4897', 'H', 'H', '2103']

A:
E
****