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]: 2, 27, ['d', 'L', 'o', '3417', 'J', '2183', '8813', '2469', '3583', '8225', 'o', 'q', 'N', '3215', 'V', 'f', '7371', 'F', '6797', 'R', 'X', '2245', 'P', 'v', '4347', 'k', 'K', 'O']
[EX A]: Kk7434vP5422XR7976F1737fV5123Nqo52283853964231883812J7143oL

[EX Q]: 1, 3, ['o', 'o', '4511', '9203', '6071', 'Q', '5337']
[EX A]: 1154oo

[EX Q]: 5, 13, ['7261', 'M', '9049', 'o', '6657', '6043', 'c', '5139', 'j', '7221', 'm', 'j', 'C', 'G', '7579', '9929']
[EX A]:
Cjm1227j9315c34067566