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: 2, 9, ['g', '309', 'x', '3537', '5995', 'K', '6951', 'x', 'b', '3171', '9079', '7597']
Example Output: bx1596K59957353x903

Example Input: 1, 2, ['y', 'n', 'a', '4367', 'Q', 'S']
Example Output: ny

Example Input: 8, 16, ['R', '4087', 'H', 'f', 'C', 'a', '9119', 'u', '1469', '2917', 'O', '8533', '2395', 'T', 'M', 'O', '4587', '9671', '9275', '5541', '9195', 'p']
Example Output:
OMT59323358O71929641u