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, 7, ['H', '689', 'd', '6759', '3531', 'd', '8393', 'N', 'd', 'o', '2377', '4065', '8021', 'c']
3938d13539576d

14, 21, ['127', 'y', 'x', 'i', 'Z', 'l', '1427', 'O', '2291', 'P', '429', '4115', 'C', 's', '4065', 'M', '6453', 'C', '9475', 'Q', '6545', 'j', 'W', '7117', 'h', '7965', 'U', '5121', '3381', '4175']
5456Q5749C3546M5604s

12, 20, ['1185', 'N', '5725', '6443', 'X', 'R', '7387', 'M', '1393', 'I', '8777', 'R', '8211', 'S', 'E', '1473', 'o', 'z', '7039', '5607', '1439', 'D', 'w']

70659307zo3741ES1128R