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:
13, 22, ['9291', 'W', '7055', 't', 'i', 'b', 'U', '4739', '5753', '3843', 'H', '1809', '3663', 'Q', '9687', 'P', 'v', 'b', 'J', 't', 'z', 'R']
answer:
RztJbvP9687Q3663


question:
16, 20, ['7675', 'c', '9729', '8219', 'P', '9939', '9217', 'C', '4067', '549', 'g', 'w', '3793', 'I', 'U', 'R', 'S', '2615', 'h', 'M', '889']
answer:
Mh2615SR


question:
18, 19, ['7629', '2753', '9243', '3995', 'S', 't', '555', 'g', '5949', '707', '2189', '8577', 'j', '8963', '5931', 'J', 'm', '3981', 'g', 'u', 's', '7855', '5761', '3305']
answer:

g3981