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: 5, 5, ['7991', '8029', '9605', 'u', '9539', 'q', '3789', 'i', '8639', '7477']

Output: 9359


Input: Consider Input: 3, 22, ['5347', 'e', 'a', 'i', 'o', 'W', '3101', '5381', 'u', '8799', 'r', '7559', '9931', 'V', 'l', 'v', 's', 'q', 'C', 'o', '7803', 'c']

Output: c3087oCqsvlV13999557r9978u18351013Woia


Input: Consider Input: 5, 16, ['9511', '1967', '711', '3301', '6013', '7139', '5753', '5813', 'I', '5011', '5537', '2897', 'P', 'r', '2849', '8015']


Output: 51089482rP798273551105I3185357593173106