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, 19, ['m', 'O', 'G', '7827', '4861', 'I', 'x', '9825', 'Q', '1793', '4275', '6935', '4815', 'I', '7569', 'i', 'g', '5497', '1999', 'X', 'Q', 'D', '6127', 'g', 'Q', 'R', 'C']

19995497gi7569I4815693542751793Q9825xI