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:
10, 19, ['V', '2245', '8933', '3669', '7723', 'v', '1895', 'w', 'N', 'g', '3075', 'k', '813', '3569', 'i', 'j', '4087', 'M', '4019', 'n', 'E', 'p']

Ex Output:
9104M7804ji9653318k5703g


Ex Input:
2, 6, ['6717', '6639', 'l', 'i', 'o', '1819']

Ex Output:
9181oil9366


Ex Input:
6, 9, ['q', '237', '6637', '143', '5153', 'b', 'k', '3283', 'i', '473']

Ex Output:

i3823kb