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, 25, ['9761', '1943', '2875', 't', 'R', 'o', '5107', '9021', 'r', '1051', 'T', 'B', 'c', 'V', 'G', '2921', '4999', 'Q', '9713', 'b', 't', '681', 'K', '9109', 'i']

i9109K681t