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, 3, ['7635', 'c', 'h', 'D', 'K', '7235', 'e']
[EX A]: hc5367

[EX Q]: 10, 13, ['3493', '8321', '8153', 'Y', 'A', 'H', 'z', 'D', 'G', '3563', 'O', '697', '7357', 'F', 'V', '515', 'a', 't']
[EX A]: 7537796O3653

[EX Q]: 3, 13, ['9827', '3335', 'K', 'p', '7941', 'U', '4513', 'l', 'B', '179', '9825', '5437', 'u', '7853', '8907', 't', 'V', 'U', 'K', '7159', '6077', 'n']
[EX A]:
u73455289971Bl3154U1497pK