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]: 4, 4, ['339', '1345', '9749', '6877', 'b', 'K', 'f', '1443']
[A]: 7786


[Q]: 10, 13, ['v', '9787', '3803', 'P', 'M', '7127', '7845', '6369', 'u', '8715', 'I', '7491', '6593', '459', '1747', 'L']
[A]: 39561947I5178


[Q]: 8, 9, ['c', 'L', 'F', 'v', 'u', '7817', '2331', '2053', '2695', 'g', 'v', '6331', 'v']
[A]:
59623502