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, 4, ['6969', 'P', '8161', '6347', 'P', 'S', 'z']

Ex Output:
74361618P9696


Ex Input:
3, 3, ['2047', 'R', '6885', '1243', 'Z']

Ex Output:
5886


Ex Input:
1, 3, ['y', '7205', '5959', 'K', '8457', 'I', 'Q', 'l', '9565', '8535', 'y', 'm', 't', '5815', 'f', '9309', 'V', '4401', 'r', '2483', '749', 'w', 'm', 'O', '5335', 'x', 'k', '6901', 'e', 'H']

Ex Output:

95955027y