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:
4, 10, ['8271', '4307', '8053', '1105', '5247', '3183', '7629', '9177', 'b', 'c', 'b', '5657', 'U', 't', 'p', 'A', 'x', '3377', 'F', 'd', '3535', '6983', '5137']
answer:
cb91777629318352471105


question:
2, 4, ['7887', 'x', '3749', 'N', 'U', '2971']
answer:
N3749x


question:
2, 2, ['3553', '9767']
answer:

9767