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]: 6, 8, ['J', '4955', '3497', '8869', 'n', '2093', '6249', 'A', '8957']
[EX A]: A94263902

[EX Q]: 1, 2, ['N', '1117', '1343']
[EX A]: 7111N

[EX Q]: 7, 9, ['7543', '3071', 'm', 'i', '8585', '9173', 'e', 's', '6945', 'T', 'u', 's', '1081', 'S', 'P']
[EX A]:
5496se