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: 17, 27, ['k', 'p', 's', '3925', '4913', 'u', '983', '6355', '7185', 'k', 'N', '6665', 't', '6471', 'i', '139', '3221', '9603', '5031', 'P', '4677', 'o', 'x', 'Y', 'E', 'f', 'G']

GfEYxo4677P503196033221