instruction:
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.
question:
15, 25, ['n', '4163', '6355', '4085', 'u', 'X', '7669', 'c', '791', '7517', '3153', 'k', 'S', '1263', 'P', '1613', 'q', '7693', '339', '7041', '3591', '9429', '4695', '2959', 'm', 'g', '2827', '6699', '1243', 'Y']
answer:
m959259649249195314079333967q3161P


question:
1, 2, ['e', 'F']
answer:
Fe


question:
12, 19, ['5203', '9171', '8093', 'W', '4529', '1631', '1017', 'g', 'K', 'e', 'P', '7423', '9261', 's', 's', '8573', 'l', '3015', '5673', '683', 'a']
answer:

37655103l3758ss16293247