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: 5, 5, ['6131', '6209', 'H', 'g', '4529', '491', '2143', '6281']

Answer: 9254


Question: 3, 18, ['R', '7241', 'A', 'z', '8115', '6251', 'F', '1405', 'N', '3567', '1525', 'a', '6057', 'E', '5637', '4969', '3499', '5489', 'Z', 'K', 'M', 'I', 'Z', 'j']

Answer: 9845994396947365E7506a52517653N5041F15265118zA


Question: 4, 5, ['8015', '3351', '2095', 'C', 'o', 'u', '3887', 'O', '4841', 'J', '9929', 'R', '9719', 'z', '6343', '2363', 'j', '8437', 'A', 'i', 'N', '7575', 'e', '4823', 'n', 't', '8055', 'D']

Answer:
oC