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.
1, 19, ['9529', 'D', 'y', 'b', 'U', 'l', 'x', '6843', 'L', '7153', 'C', '6875', 'Y', '4647', 'm', '3831', '7305', 'q', 'f', '9249', 'z', '5991', '4575']