Detailed Instructions: 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.
Q: 1, 2, ['1227', '4005', 'v', '969', '621', 'r', '9791', 'X', 'V', '1127', 'g', 'B', 'n', 'u', '4871', 'c', 't', '617', '8971', 'a', 'p']
A:
50047221