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.

2, 9, ['3441', 'a', 'o', 'B', 'e', 'u', 'B', 'Z', '1287', '323', '5849', 'F', '7917', '1023', '6323', 'A', 'v', '491', '6123', '5949', '1409', 'I', '6889']
7821ZBueBoa

10, 19, ['V', '2245', '8933', '3669', '7723', 'v', '1895', 'w', 'N', 'g', '3075', 'k', '813', '3569', 'i', 'j', '4087', 'M', '4019', 'n', 'E', 'p']
9104M7804ji9653318k5703g

12, 19, ['e', 'f', '3961', '823', '4493', '8479', 'L', '327', 'E', '569', 'W', 'w', '9177', '8815', '6531', 'v', 't', 'x', '1537', 'U', 'O', 'a', '9777']

7351xtv135651887719w