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.
1, 6, ['87', 'I', '583', 'U', '2155', '3625', '3685', '9867', '7569', 'L', 'I', 'x', '1599', 's', '8581', 'W', 'L', 'j', '811', '5671', 'N', 'T', '1939', 'o', 'H', 'x']