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, 6, ['H', '103', '7091', 'V', 'T', 'F']

Answer: FTV1907301H


Question: 13, 15, ['L', 'A', '2959', 'g', '7157', '9131', 'o', 'D', 'q', 'd', 'A', '4249', 'K', 'U', '4805', 'h', '7981']

Answer: 5084UK


Question: 10, 20, ['v', '1391', 'U', '5989', 'n', '2813', '1743', '9927', '8187', '9345', '5133', 'W', 'P', '7087', 'f', '8643', '9187', 'P', 'L', '2935', '5545', 'd', '5709']

Answer:
5392LP78193468f7807PW33155439