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.

Ex Input:
4, 10, ['L', '6587', 'q', '9569', '6203', '443', '2975', '4641', '9195', '5775', 'y', 'K', '9665']

Ex Output:
577559191464579234430269659


Ex Input:
2, 6, ['1467', 'm', '9771', '6533', 'm', 'x', 'c', 'd', '3139']

Ex Output:
xm33561779m


Ex Input:
1, 9, ['8411', '9067', '1021', 'e', 'l', 't', 'e', 'm', '4797', 'e', 'G', 'h', '6147', '513', '4679', 'O', 'n', '8513', 'o', 'j', 'G', '7223']

Ex Output:

7974metle120176091148