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, 3, ['U', 'U', '5201', '4581', '2943', 'B', 'j']
[A]: 1025U


[Q]: 3, 7, ['5115', '3679', '9619', '8895', 'S', 'T', '5735', 'H', 'a']
[A]: 5375TS59889169


[Q]: 1, 17, ['5837', '613', 'R', '587', '2409', 'd', '7563', '8407', '3003', '5801', 'h', '8449', 'p', '4469', '6687', 'D', 'A', 'v', '5433', '943', '2139', '7267', '2375']
[A]:
AD78669644p9448h1085300370483657d9042785R3167385