instruction:
In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
question:
11, 20, ['T', 'U', '8683', 'N', 'X', 'F', '1307', 'Y', '1347', '6855', 'Y', '2007', '8981', '1943', 'F', '5463', '9905', 'L', '3509', '5787', 'b']
answer:
57873509L99055463F194389812007Y


question:
1, 1, ['5765', 'o', 'u', 'M', 'A', 'O', '5741', 'R', 'z', '5939', '4693', 'g', '9285']
answer:
5765


question:
2, 3, ['h', '7169', '5613', '1135', '557']
answer:

56137169