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:
2, 12, ['f', '1687', '819', 'N', 'w', '6089', '6725', 'p', '8625', '5327', 'r', '8103', 'd', '1441', 'v', 'k', '3407', '5891', 'X', '6419', 'e']
answer:
3018r72355268p52769806wN9187861


question:
10, 10, ['Z', 'Z', '2205', '7113', 'G', 'k', '973', 'I', 'n', '415', '1505']
answer:
514


question:
5, 7, ['2959', '8443', '7043', '6033', 'c', 'T', 'd', '9211', '8211', 'x', '1179']
answer:

dTc