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:
3, 12, ['N', '9659', '2169', '575', '2155', 'c', '2415', '3095', '2891', '8033', '3641', 'T', 'M', '8365', 'T', '343']

Ex Output:
T14633308198259035142c55125759612


Ex Input:
1, 8, ['7991', '7999', '8575', '4211', '6003', '2483', '7877', '7249', 'K', '21']

Ex Output:
94277787384230061124575899971997


Ex Input:
2, 12, ['I', '8245', 'e', 'h', '8761', 'Y', '3633', 'A', '3267', 'Y', '4539', 'w', '8663', '3929']

Ex Output:

w9354Y7623A3363Y1678he5428