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, 13, ['497', 'v', '7469', 'c', '8913', '533', 'P', '3051', '2237', 'R', '9609', 'J', 'R', 'x', '5787', '2203', '5943', '6847', '8989', 'A', '5227', 'O', 'M', 'n', '4993']
[A]: RJ9069R73221503P3353198c9647v794


[Q]: 2, 19, ['C', 'D', 'C', 'Z', '3843', 'j', 'T', 'o', '9147', '2915', 'n', 'N', '939', 'S', '2457', '7789', 's', 'z', 'V']
[A]: Vzs98777542S939Nn51927419oTj3483ZCD


[Q]: 20, 26, ['1413', '5315', '4807', 'Y', 'J', '9647', '1305', 'n', '1221', '3437', '3289', 'T', '4093', 'J', 'd', '3275', '6963', 'C', 'W', 'f', '3', '4799', 'W', 'g', '1089', 'E']
[A]:
E9801gW99743f