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.
--------
Question: 1, 3, ['8015', 'y', 'r', '8077', 'U']

Answer: ry5108


Question: 1, 2, ['735', 'W', '5879', '8259']

Answer: W537


Question: 10, 18, ['7909', 'b', '6257', 'C', '9331', 'N', '6225', 'R', '9929', 'a', 'I', '1673', 'H', '4233', '9513', '8791', '6953', 'u', 'Z', 'E', 'd', 'J', 'J']

Answer:
u3596197831593324H3761Ia