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]: 7, 8, ['8275', 'o', 'f', '6403', '7399', 'M', 'E', '7879', 'e', 'L', 'F', '2019']
[A]: 9787E


[Q]: 6, 9, ['6157', 'Z', 'f', 'N', 'Z', 'T', '7299', 'G', 'w', '3923', 'H', '3255']
[A]:
wG9927T