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:
1, 4, ['O', 't', '8177', 'D']
answer:
D8177tO


question:
9, 18, ['p', '5557', 'r', 'I', 'k', '4673', '5355', '3105', 'm', '6655', '1505', '2413', '7439', 'b', 'K', '7053', '2385', '8935', '9949', '5351', '4423', 'y', 'p', '7891', 'A', '1271', 'o', 'z']
answer:
893523857053Kb7439241315056655m


question:
9, 29, ['R', 'z', '7313', 'T', '6827', 'B', 'j', 'K', 'D', 'W', 'E', 'B', '1957', '7993', 'u', 'x', '4129', 'o', '7693', '1797', '4871', 'G', 'f', '1885', '5109', '427', 'U', 'j', 'L']
answer:

LjU42751091885fG487117977693o4129xu79931957BEWD