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, 12, ['9797', 'D', '41', 'Y', 's', 'u', 'X', 'Q', '2437', '7385', '7137', 'S', '6367', 'w', 'f', '7021', '7685', '7413']
[A]: S731758377342QXusY14D


[Q]: 1, 4, ['j', '2349', 'V', '4879', '8473', 'X', 'C', '2769', 's', '6297', '7723', '6009', 'I', '6385', '9161', '9179', '9785', '4965', '4479', '7323', '4685', '1891']
[A]: 9784V9432j


[Q]: 4, 21, ['433', 'Z', 'V', 't', 'N', 'F', '1473', '2199', 'U', '2603', 'B', '5499', 'L', '4903', '4833', '9661', '1759', 't', '6733', '8589', 'z', 'M', '8269', 'n', '7951', 'd', 'M', 'N', '9197', 'b']
[A]:
z98583376t9571166933843094L9945B3062U99123741FNt