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.

2, 6, ['1467', 'm', '9771', '6533', 'm', 'x', 'c', 'd', '3139']
xm33561779m

4, 9, ['2731', '4987', '2927', '8573', 'O', '8349', '9507', 'K', '7307', 'V']
7037K70599438O3758

1, 7, ['7367', '5975', '9191', 'E', 'v', '3015', 'n', 'S', 'z', 'n', '2039']

n5103vE191957957637