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, 12, ['p', 'o', '2673', 'd', 'r', 'n', 'Z', 'u', 'm', '5195', '6521', '7671']
[A]: 176712565915muZnrd3762o


[Q]: 6, 16, ['y', 'M', '5237', '1935', '4057', 'W', '1937', '6517', '717', 'i', '8255', '1011', 'A', '3537', '2411', 'U', 'J', 'a', '1591', '2299', 'W', '8383', '8579', '8183', '7473']
[A]: U11427353A11015528i71771567391W


[Q]: 2, 2, ['t', 'H']
[A]:
H