Definition: 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.
Input: 8, 18, ['r', 'u', 'f', 'N', '1035', 'd', '243', '6227', 'j', '2141', 's', 'l', '5177', 'H', '1931', 'I', 'g', 'f', '931', 'C', '4817', '8619', 'r', 'T', '2245']

fgI1931H5177ls2141j6227