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.

9, 20, ['r', 'n', 'a', 'M', '483', 'w', '8805', '7837', '5553', 'f', 'y', 'T', 'c', 'c', 'K', '4221', 'I', 'O', 'J', 'A', 'g', 'P']
AJOI1224KccTyf3555