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]: 3, 9, ['R', 'r', '7889', '4141', '1281', 'x', '9299', '4803', 'k', '2433']
[A]: k30849929x182114149887


[Q]: 10, 17, ['H', '8993', 'l', 'W', 'T', '7135', 'A', '743', '7525', '1361', '9927', '3409', 'g', 'k', 'd', 'w', '7523', '1303']
[A]: 3257wdkg904372991631


[Q]: 1, 7, ['313', '1299', 't', 'A', '6029', '4937', 'h', '855', 'L', '2619', '1467', 'K', '9329', '5537', '6697', '4471', 'a', '1943']
[A]:
h73949206At9921313