Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 1, 18, ['w', 'a', 'T', '1961', 'q', 'f', '6751', '1037', 'Y', '1597', 'Z', 'k', 'i', 'B', '1245', '6749', '6759', '6957', 'f', '5247', 'n', '9345', '7027', 'u', '8955']

6957675967491245BikZ1597Y10376751fq1961Taw