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, 12, ['2523', 'g', '8505', 'R', '1093', 'h', '5607', 't', '1149', '8409', '6199', 't', 'U', '5953']

t619984091149t5607h1093R8505