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: 6, 17, ['3885', '3687', '6801', '299', 'P', 'H', 'O', '7759', 'x', 'U', '8429', 'x', '7899', 'N', 'g', '2153', '6353', '1861']

63532153gN7899x8429Ux7759OH