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: 2, 22, ['E', '9437', 'R', 'M', 'p', 'A', '7261', '4163', '8357', '6555', 'I', 'T', '5471', 'G', 'S', '3447', 'C', '5845', 'I', '3817', 'p', '6781']

Answer: 6781p3817I5845C3447SG5471TI6555835741637261ApMR9437


Question: 22, 22, ['D', 'U', 'O', '2609', '7785', 'F', 'v', 'g', '5451', 'W', 'D', 'n', 'R', '1483', 'o', 't', '6741', 's', 'u', '9611', 'Y', '1261', '8023']

Answer: 1261


Question: 20, 23, ['9081', 'd', '9709', 'C', '2049', '9475', '2729', '4355', 'h', '1449', '5241', 'K', 'w', '8887', '6141', '5473', 'w', 'i', 'T', '5077', '6227', 's', '8805', '9693', 'W', 'X', '4897']

Answer:
8805s62275077