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:
5, 5, ['m', '1577', '7895', 'l', 'K', '2981', '8677']

Ex Output:
K


Ex Input:
2, 7, ['9969', 'u', '9811', 't', 'z', '8347', 'i', 'O', '5897']

Ex Output:
i7438zt1189u


Ex Input:
1, 11, ['9341', '973', 'g', 'K', 'u', 'p', '7097', '7255', 'h', '7445', '2879', '6263', 'o']

Ex Output:

97825447h55277907puKg3791439