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]: 1, 4, ['6969', 'P', '8161', '6347', 'P', 'S', 'z']
[A]: 74361618P9696


[Q]: 18, 18, ['O', '7845', 'f', '2313', 'f', '9661', 's', 'O', '6009', '6997', 'f', 'T', 'f', '6517', 'E', 'H', 'k', 'Y', 'i', '2839', '1839', '3251', 'H', '1939']
[A]: Y


[Q]: 6, 14, ['L', '1923', '4799', '9677', '601', 'Q', '1901', '9637', 'j', 'm', '2163', 'e', 'y', 'K', 'V', '3445']
[A]:
Kye3612mj73691091Q