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: 3, 9, ['R', 'r', '7889', '4141', '1281', 'x', '9299', '4803', 'k', '2433']

A: k30849929x182114149887
****
Q: 2, 10, ['V', '7549', '4639', '3825', '4619', 'w', '7667', '557', 'L', 'z', '1883', 'k', 'j', 'o', 'p', '3945', 'u', 'l', '5637']

A: zL7557667w9164528393649457
****
Q: 2, 12, ['q', '5535', '1307', '6315', '9733', '8051', '4975', '885', '6491', 'b', 'm', 's', 'a', '1921', '2717', '5121', 's', '6307', 'W', 'J', '1779', 'y']

A:
smb1946588579415083379513670315355
****