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.

[EX Q]: 1, 4, ['6969', 'P', '8161', '6347', 'P', 'S', 'z']
[EX A]: 74361618P9696

[EX Q]: 6, 7, ['E', 'A', 'd', 'a', 'S', '851', '8465', '3205', '5169', '7097', '1679', '3875', 'B', '4761']
[EX A]: 5648158

[EX Q]: 3, 16, ['9395', 'f', '5019', 'N', 'T', '4185', '6651', 'D', '6869', 'y', '6637', '8715', 'b', '4881', 'E', 'j', '5769', 'X', '8747', 'U', 'S', 'C', '1199', '4433', '691', '9263']
[EX A]:
jE1884b51787366y9686D15665814TN9105