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: 9, 21, ['7757', 'h', 'V', '8219', 'I', '3051', '6879', 'a', 'b', 'j', 'j', '173', '9749', 'G', 'f', '3205', '8377', 'j', 'y', '1101', 'e', 'O', 'P', '9655', 'B']

e1101yj83773205fG9749173jjb