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: 5, 19, ['K', '3235', '6537', 'J', 'd', 'm', 'X', 'T', 'g', 'f', 'x', 'K', 'p', 'N', '8935', '1169', '389', 't', '5589', '8207', '5751', '8525']

5589t38911698935NpKxfgTXmd