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: 5, 7, ['N', 'U', 'L', '1205', '7327', 'b', 'c']

Output: cb7237


Input: Consider Input: 3, 6, ['643', 'X', 'F', '7453', '8495', '7943']

Output: 349759483547F


Input: Consider Input: 19, 25, ['9547', '6327', 'p', 'k', 'V', '3983', 'k', '1555', '1869', 'n', 'd', 'L', 'X', '3527', '1523', '7225', 'T', 'i', 'Y', '2599', 'M', 'B', 'u', 'H', '8571']


Output: 1758HuBM9952Y