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: 1, 12, ['Q', '4577', 'f', '8841', '3885', '5399', '8861', 'a', '4589', '9643', 'T', 'I']

IT96434589a8861539938858841f4577Q