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, 27, ['9785', 'O', '1451', '263', 'V', '9045', 'n', 'K', 'B', '8131', '6137', '437', 'v', 'd', '2787', '3483', '3141', '2151', 'r', 'q', '2981', '4301', '1947', '7631', '8755', 'F', 'W', 'L', 'O']
Example Output: WF55781367749110341892qr1512141338437872dv73473161318BKn

Example Input: 2, 6, ['415', '3603', 'l', 'C', '9471', 'z', '4087', 'Y', 's']
Example Output: z1749Cl3063

Example Input: 3, 3, ['X', 'n', 'h', 'Z', '3187', '4187', 'M', 't', 'o', '6313', '6297', 'K', '8285', 'e', 'm', 'e']
Example Output:
h