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: 2, 5, ['1769', '8475', '6093', '8939', 'V', '2263', '8825', '3527', '4195', 'A', '7999', '7841', '4967', '1829']

Answer: V939839065748


Question: 8, 9, ['2123', 'O', '2505', 'd', '5435', '2145', '8281', 'b', 'v', '6485', '2349', '8739', '8459', 'O', 'h', '8279', 'L', '8345', 't', 'T', '5075', '7295', 'X']

Answer: vb


Question: 6, 18, ['3115', 'D', 'C', 'A', '3805', '1653', '6241', '9679', '7321', '9935', '7739', '1273', '9601', 'd', 'b', '3429', '5181', 'a', '6501', 'Q', '9323', 's', 'A', 'S', 'm', '7055']

Answer:
a18159243bd10693721937753991237976914263561