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.
3, 19, ['X', 'j', '6055', '1735', 'n', 'R', 'w', '7381', 'D', '6431', 'N', 't', 'o', 'O', '6671', '4457', 'd', '7219', '1557', '1961', 'V', '6839', 'l']