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, 2, ['3303', '6127']

Ex Output:
72163033


Ex Input:
1, 2, ['L', '7723']

Ex Output:
3277L


Ex Input:
3, 22, ['2093', '2299', 'k', '4269', '6799', '2449', '6017', 'Y', '7643', 'r', 'q', '4399', 'i', 't', '7053', 't', 'h', 'V', 'E', 'e', '3701', '4891']

Ex Output:

19841073eEVht3507ti9934qr3467Y7106944299769624k