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: 21, 22, ['X', 'P', '8345', 'o', 'B', '9543', '5097', 'f', '8595', '6935', 'I', 'h', 'z', '5255', 'n', 'C', '8915', 'h', 'a', '8357', '3991', '4065']

40653991