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.
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Question: 9, 21, ['D', 'j', 'T', '91', 'W', '9709', 'H', '1023', '4595', '1241', '917', '383', '7739', 'G', 'I', 'b', '8401', '7941', 'j', '2713', 'K', '2443', 'E', 'B', '1515', '5141', '1221', '993']

Answer: K3172j14971048bIG937738371914215954


Question: 3, 8, ['6945', '2403', '7633', '2933', '1015', 'G', '7261', '9101', '6435', 'M']

Answer: 10191627G510133923367


Question: 5, 5, ['7343', 'i', 'G', 'X', '4287', '2137', 't', '1647', 'd', '4677', '839', 'L', 'x', 'Y', 'w', '8999', '9245', 'd', '9125']

Answer:
7824