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.

21, 24, ['t', '1315', '1977', '8701', 'w', '2899', '9389', 'c', 'F', '2949', '9591', 'Y', '3127', '5887', 'D', '6527', 'I', '3229', '6585', '5375', '6289', 'j', '1775', 'n', 'O', '4741']
n5771j9826

5, 7, ['u', '3017', '4149', 'z', '9231', 'C', '7461', 'e']
1647C1329

2, 12, ['243', 'b', 'T', '5831', '557', 'm', 'q', 'g', 'G', '5813', 'f', 'w', '769', 'Z', '8289', '6533', '67', '7803', 'Y', 'V', 'a']

wf3185Ggqm7551385Tb