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]: 2, 11, ['G', 'z', 'w', 'C', 'h', '6193', 'T', 'r', 'f', 'h', 'p', 'R']
[A]: phfrT3916hCwz


[Q]: 11, 18, ['7155', 'W', '8393', 'q', 'E', 'S', 'B', '949', '4761', '8663', 'V', 'V', '5047', '4111', '3235', 'I', '1289', 'P', 'O', 'w', '8307', '6725', 'h', '735', 'j', 'x', '1061']
[A]: P9821I532311147405VV


[Q]: 7, 17, ['2643', '1703', '3889', '8681', '7739', '6217', 'k', 'k', '687', '4947', '8193', '8803', '7235', 'B', '4815', '1523', '4425', '9897', '8815', '2881', '3371', '9683']
[A]:
524432515184B5327308839187494786kk