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, 18, ['4767', 'b', '8007', 'd', '8939', 'L', '6229', 'f', '9433', '7787', 'V', '4681', '1931', '8577', 'h', '8721', '4659', '7179', 'V', '9745', 'E', '923', '1171', '6289', 'J', '4771']

717946598721h857719314681V77879433f6229L