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.

4, 4, ['339', '1345', '9749', '6877', 'b', 'K', 'f', '1443']
7786

5, 7, ['193', 's', '6617', 'a', 'Y', 'e', '8931', '9801', '3025', '4753', 'c', 'n', '6923', '3925']
1398eY

13, 18, ['2319', '8617', 'n', '2327', 'x', 'N', '2351', 'Z', 'u', '4219', 'Y', 'z', 'P', '3801', '4007', '8895', 'D', 'z', 'Q', 'e', '3277']

zD598870041083P