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, 27, ['4191', 'x', 'G', 'h', '69', 'b', '1105', 'h', '69', 'F', '1871', 'B', '3329', 'w', '7623', '2829', 'T', 'R', 'O', '2811', 'k', 'E', '7445', 'Z', 'J', '7441', 'M']

M7441JZ7445Ek