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, 5, ['l', 'E', '729', 'U', 'z', '9729', '3247']
[A]: zU927E


[Q]: 3, 9, ['Y', '9075', '2327', '1643', '655', '935', 'a', 'j', 'm']
[A]: mja53955634617232


[Q]: 1, 5, ['W', 'x', '5587', '9787', 'm', 'U', '8275', 'X', 'D', 'g', '5305', 'F']
[A]:
m78797855xW