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]: 6, 19, ['1247', 'w', '6657', '3757', '9313', 'u', '5655', 'n', '9559', '4017', '9041', 'n', 'w', '155', 'C', 'N', '6351', '9761', '5701', '3857', '6167', 'u']
[A]: 107516791536NC551wn140971049559n5565u


[Q]: 1, 1, ['T', 'Y']
[A]: T


[Q]: 18, 19, ['5331', '7699', '297', '2603', 'f', '205', '4157', 'Q', 'V', '7611', '2073', 'D', 'N', 'l', '3801', 'k', '3233', 'T', 'n', '541', '5131', 'h']
[A]:
nT