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, 5, ['C', '4345', 'T', 't', 'U', 'p']
[A]: UtT


[Q]: 5, 7, ['6005', 'y', '5057', '7865', '2845', '101', 'M', 'd']
[A]: M1015482


[Q]: 14, 19, ['a', '1505', '3687', '5529', 'Z', '9621', '4129', 'P', '2429', 'Y', 'Z', 'd', '1041', '1775', 'A', '1299', '8861', '3905', '2095', 'd']
[A]:
5902509316889921A5771