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: 12, 17, ['t', 'G', 'j', 'L', 'P', '6479', 'G', '3069', '8747', 'X', 'Z', '107', 'R', '9535', 'h', 'P', '1231', '1607', '485', 'A', '1589', '8557', 'C', '9327', 'E', '8125']

1231Ph9535R107