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, 6, ['Q', '4571', 'S', 's', '5669', '7689', '3335', 'C', 'J', '6565', '3031', 'G', '9817', 'O', '9691', '9069', 'u', '5965', 'R']
[A]: 98679665sS1754


[Q]: 6, 7, ['2289', '1015', 'T', 'e', '4499', 'J', 'B', '5107', 'x', '3103', 'Q', 'Z', 'H']
[A]: BJ


[Q]: 4, 22, ['h', 'i', '9815', '831', 'h', 'q', '53', '3243', 'U', 'g', 'R', '2413', 'S', 's', 't', 'd', 'R', '5205', 'G', 'g', 'r', 'k', 'z', 'X', '2519', '4149', '6485', '8941']
[A]:
krgG5025RdtsS3142RgU342335qh138