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, 5, ['3155', '5437', '1383', 'L', 'a']

Ex Output:
aL383173455513


Ex Input:
6, 9, ['6157', 'Z', 'f', 'N', 'Z', 'T', '7299', 'G', 'w', '3923', 'H', '3255']

Ex Output:
wG9927T


Ex Input:
1, 10, ['9787', 'M', '6049', 'O', '2281', 'k', '4039', '9585', 'Q', '289', 'v', '4635', '1239', 'M', 'n', '5571', '5841', '5911', 'N', '3385', '9613', '571']

Ex Output:

982Q58599304k1822O9406M7879