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]: 6, 12, ['z', 'E', '6097', 'G', 'Z', 'X', '4155', 'r', 'n', 'i', '4915', 't', 'P', 'A']
[A]: t5194inr5514X


[Q]: 8, 12, ['K', 'x', 'a', 'A', '6203', '117', '1007', '6063', '569', '9809', '9097', 'w', '3939', 'l', 'V']
[A]: w790990899653606


[Q]: 2, 16, ['W', '8271', 'b', 'F', '9451', '4467', 'V', '6403', 't', '1607', '421', 'j', '949', '3513', '4097', 'c', '1657', '539', 'q', 'g', '8709', 'Q', '4455', 'a', '5339']
[A]:
c79043153949j1247061t3046V76441549Fb1728