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:
7, 22, ['3371', '4741', 's', '7429', 'z', '639', 'Q', '5679', 'e', '8039', '5323', 'C', '2901', '7629', 'D', 'y', 'C', '4333', 'P', 'v', 'A', '8171']

Ex Output:
1718AvP3334CyD92671092C32359308e9765Q


Ex Input:
5, 7, ['193', 's', '6617', 'a', 'Y', 'e', '8931', '9801', '3025', '4753', 'c', 'n', '6923', '3925']

Ex Output:
1398eY


Ex Input:
16, 16, ['7707', 'j', 'h', 'v', '3143', 'x', '2463', 'i', '9149', '7495', '1429', 'h', '969', 'k', 'I', '5391', '5173', '4239', 'r', 'e', 'h', 'M']

Ex Output:

1935