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.

3, 5, ['2849', 'J', 'L', '2347', '7219', 'a', 'Q', 'U', '6865', 'O']
91277432L

7, 8, ['k', '59', 'Q', 'b', 'N', '5153', 'm', 's', '1703', 'i', 'E', 'x', '4727', '9723', '9305', '8843', '5295', '4281', '555']
sm

1, 14, ['c', 'M', '5911', 'j', '8855', 'P', '1941', 'x', '7575', '4755', '331', '8087', '2967', '9701', '8137', 'g', 'p', 'x', '9595', 'n', '6675', 'u', 'p', 'Z', 'd', '5257']

10797692780813355745757x1491P5588j1195Mc