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, 3, ['r', '5153', 'I']

Ex Output:
I3515r


Ex Input:
5, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']

Ex Output:
dT


Ex Input:
8, 14, ['q', '4177', 'L', '4265', '6357', '4981', 'I', '8135', '331', '7903', '5845', '6097', '7943', 't', '1289', '2829', 'c', 'g', '1779', '407', 'h']

Ex Output:

t34977906548530971335318


