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: 2, 19, ['1535', 'b', 'O', '197', '4119', 'b', '2317', 'k', '5103', '4599', 'U', '423', 'e', 'b', '7057', 'm', 'Q', '8047', '585', '9119', 'U', 'T', 'I', '1785', 'F', 'M']

5858047Qm7057be423U45995103k2317b4119197Ob