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.
Q: 6, 15, ['2015', '651', '2089', '7375', 'n', 'T', '5913', 'o', 'o', '1811', '3185', 'm', 'O', '6279', 'd', '5733', '6173', 'c', 'h', 'o', '8587', 'G', 'r', 't', '31', 'g', '1829', 'L']
A: 
d9726Om58131181oo3195T