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.

[EX Q]: 3, 8, ['w', '7571', 'o', '235', 's', 'n', '3941', '6357', '3251', 'G', '5961', 'z', 'N', '5029', '7589', '3993', '5087', '6351', '5799', '1943', '7661', 'S']
[EX A]: 75361493ns532o

[EX Q]: 1, 18, ['4729', '2591', '5309', 'L', 'F', '4977', 'I', 'E', '189', 'g', 'T', '3251', 'O', 'Z', '511', 'd', 'L', 'w']
[EX A]: wLd115ZO1523Tg981EI7794FL903519529274

[EX Q]: 2, 4, ['8221', 'c', 'P', 'y', '3019', '6391', 'M']
[EX A]:
yPc