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, ['8967', '4767', 'q', '7543', '959', '2171', '3945', 'y', '6743', 'Z', '8689', '8133', 'T', 'f', 'Z', '1887', '3051', 'k', '1825', '8639', '9971', 's', '5117', '8019', '1337']

30511887ZfT8133