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.

Ex Input:
1, 1, ['g', '3127', 'O']

Ex Output:
g


Ex Input:
2, 4, ['B', '5601', 'v', '7431', 'z']

Ex Output:
1347v1065


Ex Input:
6, 11, ['3073', 'x', 'q', '7197', '7253', '2989', 'p', 'N', 'C', 'N', '403', 'R', '4715', '6521', '8683', 'I', 'H', 'q', '8709', 'k', '1957', 'K', 'C', 'w', 'P', '1519', '6695', 'R', '3335', 'M']

Ex Output:

304NCNp9892