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.
15, 18, ['V', '6955', 'f', 'I', '6321', '7193', 'M', '5599', '5927', 'L', 'q', '509', '39', 'P', '8867', '5273', '7211', 'L', 'd', 'q', 'J', 'u', 'H', '563', '5159', '7589', 'x', 's', 'N', 'Q']