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, 16, ['S', '5719', '173', 'P', 'a', '5791', 'e', '6279', 'q', '2585', '9533', 'r', '849', 'h', '3259', '3707', '4939', 'X', 'e']
70739523h948r33595852q9726e1975aP

6, 7, ['E', 'A', 'd', 'a', 'S', '851', '8465', '3205', '5169', '7097', '1679', '3875', 'B', '4761']
5648158

1, 5, ['7461', 'M', 'W', '7243', '1391', 'l', 'W', 'I', 'l', '2365', 'W', '3821', 'f', 'L', 'J', 's', '7693', '6263', 'N', '2513', '1145', 'U', '8093', 'n', '309', 'j', 'w', '8023']

19313427WM1647