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: 2, 12, ['p', 'o', '2673', 'd', 'r', 'n', 'Z', 'u', 'm', '5195', '6521', '7671']

Output: 176712565915muZnrd3762o


Input: Consider Input: 7, 9, ['w', 'L', '7649', 's', 'D', '45', 'L', 'O', 'H', '2781', '6883', 'h']

Output: HOL


Input: Consider Input: 4, 13, ['H', 'm', 'J', 'w', 'd', 'I', 'M', '541', '4231', 'G', '647', '4089', 'F', 't', 'H', 'I', '6221', 'J', 'k', 'o', 'l', '9505', 'L']


Output: F9804746G1324145MIdw