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:
1, 3, ['2217', 'i', '6309', '6299', 'z']
answer:
9036i7122


question:
3, 22, ['5347', 'e', 'a', 'i', 'o', 'W', '3101', '5381', 'u', '8799', 'r', '7559', '9931', 'V', 'l', 'v', 's', 'q', 'C', 'o', '7803', 'c']
answer:
c3087oCqsvlV13999557r9978u18351013Woia


question:
13, 15, ['5239', '8581', 'Q', 'H', '3529', '5071', 'C', 'c', 'P', 'd', '8621', '6041', '8399', '6507', 'O', '8877', '5409', '1505', 'a', 'l', '2167', '1431', '3857', '1755', 'X', 'B', 'T']
answer:

O70569938