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.

[EX Q]: 27, 30, ['5597', 'd', 'R', '9463', '5187', '3625', 'x', 'c', '4851', '435', '5719', 's', '2797', '1659', '2379', 's', '8761', 'F', '5895', '4479', 'j', '6487', 'U', 'I', 'p', 'P', '1493', '7893', 'w', 'C']
[EX A]: Cw39873941

[EX Q]: 3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']
[EX A]: 19277718

[EX Q]: 4, 7, ['F', 'F', 'p', 'A', '2707', 'W', 'P', '4083']
[EX A]:
PW7072A