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.

1, 4, ['6193', '5871', '9871', '4821']
1284178917853916

5, 5, ['6131', '6209', 'H', 'g', '4529', '491', '2143', '6281']
9254

1, 15, ['z', '2795', 'M', 'o', '1853', 'r', 'U', '4279', '2771', '5619', '9709', '6543', 'M', '3357', '4967', '9377']

76947533M34569079916517729724Ur3581oM5972z