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: 6, 21, ['8233', 'O', '797', '5039', '6365', '9735', 'E', 'D', 'z', '5635', '6727', 's', '1261', 'H', '6103', '4451', '6391', 'm', 'Q', '2849', '4629', 'l', '947', 'X', '8905']

46292849Qm639144516103H1261s67275635zDE9735