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, 19, ['D', 'X', 'n', 'n', '9455', '2837', '8433', '7135', 'U', 'c', '3185', 'o', '4133', 'd', 'P', '6859', 'W', 'F', '8255', '7073', '7799', '5625', 'V', 'V', '2955']