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:
9, 19, ['5843', 'b', '161', 'Z', 'h', '2323', '25', 'S', 'Z', 'A', 'l', 'R', 'O', '4543', 'd', 'J', '1667', 'I', 'N', 'K', 'T', '2767', '4409', 'B']
answer:
NI7661Jd3454ORlAZ


question:
1, 2, ['Q', '6249', 'm', 'H', 'x', 'b', 'Z', 'z', '15']
answer:
9426Q


question:
3, 10, ['2467', '3367', '3419', '6049', '585', 'F', 'g', 'T', 'h', 'l', 'O', '7551']
answer:

lhTgF58594069143