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]: 1, 1, ['C', '6223']
[EX A]: C

[EX Q]: 1, 6, ['7675', '2039', 'u', 'w', '8039', 'e', 'q']
[EX A]: e9308wu93025767

[EX Q]: 5, 10, ['T', '6261', '5997', '2525', '801', 'P', 'I', '6653', 'v', '379', '233', 'p', '2635', 'c', 'm', '5431', 'I', '1991', 'F', 't', 'a', '7741', 'm', '4165']
[EX A]:
973v3566IP108