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]: 3, 12, ['N', '9659', '2169', '575', '2155', 'c', '2415', '3095', '2891', '8033', '3641', 'T', 'M', '8365', 'T', '343']
[EX A]: T14633308198259035142c55125759612

[EX Q]: 4, 5, ['S', 'S', 'L', '7199', '3259', '8515', '8657', '8201', 'V']
[EX A]: 95239917

[EX Q]: 2, 4, ['3497', 'g', '3023', '9847', '4141']
[EX A]:
74893203g