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.

Example Input: 7, 9, ['5683', 'M', '3363', 'H', '161', '6767', 'w', 'j', 't']
Example Output: tjw

Example Input: 2, 2, ['6099', 'r']
Example Output: r

Example Input: 8, 12, ['E', '7923', 'F', '6383', '6869', 'B', '6443', 'T', '2849', 'G', '4503', '8091']
Example Output:
19083054G9482T