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: 3, 26, ['1189', '4939', '9777', '3773', 'R', 'm', 'O', '7339', 'I', '8429', 'U', 'b', '6879', '1593', '9227', 'Z', '9189', 'e', 'y', 'j', 'r', 'H', 'c', '509', '729', '6313', '7269']

6313729509cHrjye9189Z922715936879bU8429I7339OmR37739777