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: 1, 6, ['7675', '2039', 'u', 'w', '8039', 'e', 'q']

Answer: e9308wu93025767


Question: 1, 4, ['6047', 'Y', 'p', 'E', '9233', '7139', '6073', '6367', 't', '9173', 'E', 'c', '3651', 'w']

Answer: EpY7406


Question: 7, 18, ['771', 'Z', '5727', 'K', 'f', '7169', 'c', 'm', '2841', '6005', '4951', 'i', '2029', 'H', '6167', 'X', 'n', '9195', '2179', 'w', 'X']

Answer:
5919nX7616H9202i159450061482mc