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, 15, ['o', '7861', '5335', '835', 'e', '8077', 'd', '3099', 'F', 'q', 'C', 'F', 'M', '4715', '2669', 'D', '1517', '4361', 'e', 'v', 'P', '6813', 'q', '9075', '9997', '8799', 'L']
[EX A]: 96625174MFCqF9903d7708e53853351687o

[EX Q]: 2, 3, ['N', 'U', 'D', 'm', '9001', 'I', '2675', 'l', '2771', 'U', '1181', 'U']
[EX A]: DU

[EX Q]: 3, 10, ['j', 'Z', '2483', '627', '7137', 'H', '1973', 'j', '5253', 'L', '6089', '2623', '3591', '4033', '6943', 'T', 'w', '403', '3517', '189', '6197', '1671', 'O', '9855', 'A', '2121', '347', 's']
[EX A]:
L3525j3791H73177263842