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, 9, ['f', 'f', '4381', 'c', '3523', 'u', 'E', 'y', '7713', 'f', 'Q', '7631', '9529', 'M', '6041', '8011', '8441', 'i', 'c', 'V', 'b', 'x', 'h', 't', 'l', '5041', 'v', '6685', 'c']
[EX A]: 3177yEu3253c1834ff

[EX Q]: 7, 9, ['4311', 'Q', 'j', '3613', '9671', 'u', 'y', '3321', '2069', '4299', 'W', 'c', '627', '1327', '9747', 'Q', 'k', '9587', '5911']
[EX A]: 96021233y

[EX Q]: 3, 10, ['7517', 'b', '4427', '8185', 'a', 'b', 'f', '6903', '3351', '2365', '2045', 'Z', '9715', 'x', 'P', 'J', 'v', '1947', 'u', 'F', 'b', '4377', 'F', '9969', 'w', 'A', '2679']
[EX A]:
563215333096fba58187244