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.

Input: Consider Input: 1, 2, ['3909', '5863', '707']

Output: 36859093


Input: Consider Input: 6, 7, ['753', '4657', 'h', '13', '593', 'I', '7689', '717']

Output: 9867I


Input: Consider Input: 1, 2, ['R', 'g', 'J', 'I', '7997', 's']


Output: gR