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:
10, 15, ['1135', 'N', '4053', 'k', 'V', '2313', '4827', '549', '23', '223', 'y', 'L', 'r', '7031', '7605']

Ex Output:
50671307rLy322


Ex Input:
3, 9, ['Y', '9075', '2327', '1643', '655', '935', 'a', 'j', 'm']

Ex Output:
mja53955634617232


Ex Input:
15, 22, ['B', 'v', 'J', 'O', 'T', '9883', '6783', 't', 'a', 'Q', '6339', '5245', '9535', 'V', '8885', 'N', '7371', 'A', 'c', '2099', '8093', '281', '3243', 'I', 'R']

Ex Output:

18239089902cA1737N5888