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, 7, ['3029', 'F', 'e', 'O', 'R', '3721', '8267', 'r', 't', 'e', '9031', 'n', '4737', '6501', 'V', 'f', 'Q', 'M', '3039', 'F', '6175', '3699', '8835', 'j', 'q', '121']

82673721