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, 8, ['9669', '9577', '2831', 'Y', 'y', 'q', 'f', 'b', 'L', 'v', '5545', '7305']
[EX A]: bfqyY138277599669

[EX Q]: 3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']
[EX A]: 19277718

[EX Q]: 1, 12, ['9305', 'k', 'u', '8077', '5105', '6381', '8879', '1273', 'I', 'Z', '4401', 'l', '1995', '1559', 'g']
[EX A]:
l1044ZI37219788183650157708uk5039