In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

Input: Consider Input: 6, 16, ['y', 'M', '5237', '1935', '4057', 'W', '1937', '6517', '717', 'i', '8255', '1011', 'A', '3537', '2411', 'U', 'J', 'a', '1591', '2299', 'W', '8383', '8579', '8183', '7473']

Output: U11427353A11015528i71771567391W


Input: Consider Input: 6, 23, ['a', 't', 'S', '5485', 'n', '5327', '3827', 'v', 'g', 'h', 't', 'y', 'R', 'm', 'y', '2799', 'L', 'T', 'f', '4167', '8589', 'i', '465', 'B', 'd', '6059', '4833']

Output: 564i98587614fTL9972ymRythgv72837235


Input: Consider Input: 7, 11, ['8973', 'Y', 't', '171', '503', '8387', 'i', 'X', 'M', '5661', '43', 'G', 'C', 'M', '5895', 'F', 'H', '3121', '6125', '2783', '2987', 'I', 'U', '421', '2905']


Output: 341665MXi