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.
10, 18, ['c', 'n', 'G', '8967', '1783', '2879', 'N', 'C', '9629', '5001', '6227', '9467', 'O', 'K', '9521', '5767', '9599', '9925', '9373', 'k', 'Y', 'v', 'v', '6993']