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]: 3, 6, ['p', 'H', '2775', '2567', '7787', 'D', '3807', '4817', '5399']
[A]: D787776525772


[Q]: 2, 6, ['6717', '6639', 'l', 'i', 'o', '1819']
[A]: 9181oil9366


[Q]: 4, 5, ['3335', 'p', '3467', 's', 'L', '3537', '5871', 'D', '9805', 'H', '2767', 'F', '8881', 'v']
[A]:
Ls