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, 7, ['B', '707', '7101', 'l', 'i', 'Q', 'e', '9437', 'i', '4709', 'w', 't', '1459', 'A', 'E', '923']
[A]: eQil1017707B


[Q]: 10, 14, ['q', 'M', 'D', 'x', 'L', 'B', '519', '2767', 'P', '3341', '7817', 'Q', 'd', '3819']
[A]: 9183dQ71871433


[Q]: 16, 20, ['E', 'P', '6843', '943', '5955', '6829', '6767', 'M', '1683', 'z', 'E', '5045', 'H', 'x', '9949', '763', 'r', '911', '5511', 't', 'c', '5717', 'M', 'c', '5261']
[A]:
t1155119r367