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.
7, 23, ['g', 'x', '4503', '9559', 'u', '7563', 'm', 'L', 'o', '9063', '3241', '4105', 'M', '143', 'H', 'z', '8241', '5203', '2155', 'J', '7723', '7251', '295', 'K', '6697', 'D', '7157']