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: 8, 20, ['3101', 'a', '1293', '7485', 'e', '997', '7971', '2945', '2755', '709', '871', '6325', '3843', 't', '4213', 'T', 'K', 'D', '505', 'N', 'd', 'Y', 'S', '113', '895', 'O', 'x', '4853', '7025']

N505DKT4213t3843632587170927552945