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.
--------
Question: 3, 4, ['19', '2669', 'v', 'd', '2221', '4219', 'A', 'P', '7499', 'z', 'm', 'l', '427', 'u']

Answer: dv


Question: 8, 19, ['r', '7451', 'X', 'l', 'S', 'v', '4807', '4851', '8849', '3993', 'w', 'Z', '1419', '9185', 'N', '2285', '13', 'm', 'd', 'Y', 'j']

Answer: dm315822N58199141Zw399394881584


Question: 1, 1, ['6647', 't', 'n']

Answer:
7466