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: 6, 7, ['355', '4183', '3563', '8547', '4351', '6841', '5451', 'H', '8035', 'x', '3305', '4233', 'k', '2155', '9987', 'v']

Output: 15451486


Input: Consider Input: 5, 6, ['u', 'O', 'l', '9119', 'P', '6983', 'H', '6701']

Output: 3896P


Input: Consider Input: 23, 28, ['B', 'N', 'm', 'Y', 'U', '2925', 'w', '2227', '6393', '3389', 'V', '8521', 'c', 'u', 'k', '3451', 'n', '4545', '6007', 'g', '5941', '3453', 'P', '1807', 'f', '8075', 'U', 'K']


Output: KU5708f7081P