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]: 7, 8, ['9589', 'N', 'w', '429', '5545', '5047', '4133', 'p', 'a', '3793']
[A]: p3314


[Q]: 2, 4, ['B', '5601', 'v', '7431', 'z']
[A]: 1347v1065


[Q]: 7, 21, ['2935', '3545', '4427', '9467', 'P', '2723', 'O', '9185', '9569', 'Y', '7349', 'v', '731', '1121', 'K', 'o', 'T', 'W', 'z', 'p', '5399', 'J', '779']
[A]:
9935pzWToK1211137v9437Y96595819O