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, ['t', '1143', '4747', 'E', 'v', 'L', '451', '7367', 'O', 'T']

Ex Output:
3411t


Ex Input:
2, 5, ['1769', '8475', '6093', '8939', 'V', '2263', '8825', '3527', '4195', 'A', '7999', '7841', '4967', '1829']

Ex Output:
V939839065748


Ex Input:
6, 8, ['9375', 'n', 'f', 't', 'd', 'L', '7789', 'b', '3455', 'p', '5159']

Ex Output:

b9877L