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]: 2, 5, ['l', 'E', '729', 'U', 'z', '9729', '3247']
[A]: zU927E


[Q]: 3, 13, ['9827', '3335', 'K', 'p', '7941', 'U', '4513', 'l', 'B', '179', '9825', '5437', 'u', '7853', '8907', 't', 'V', 'U', 'K', '7159', '6077', 'n']
[A]: u73455289971Bl3154U1497pK


[Q]: 20, 22, ['g', 'F', '241', '7585', 'x', '3523', '2587', 'w', '9183', 'P', 'o', 'n', '319', 'L', 'g', '6397', '259', 'f', 'M', '1489', '5827', 'D', '8771']
[A]:
D72859841