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: 6, 10, ['4631', 'q', '4689', 'w', '499', '3383', '8091', '7699', 'H', '6359', 'I', '267', 'v', '3295', 'H', '4815', 'u', 'o', '5023', 'n', '9471', '7435']

Answer: 9536H996719083833


Question: 3, 8, ['s', '8395', '7689', 'x', 'P', '5953', 'X', 'D']

Answer: DX3595Px9867


Question: 5, 10, ['5149', 'B', 'n', '9725', '75', 's', '3845', '5197', 'S', '8635']

Answer:
5368S79155483s57