In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
12, 18, ['4831', 't', 'S', '2743', '8769', '603', 'U', '7309', '7117', 'H', 'n', 'Y', 'x', '5901', 'A', 'W', '2855', 'x', '2485', 'd', '3947', '7355', '2697', 'H', '2443', 'k', '359']