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]: 13, 20, ['8627', '7993', 'N', 'p', 'n', 'v', 'T', 'L', 'z', '2929', 'a', 'D', '8465', 'R', '8803', 'q', '1069', 'p', '7231', '9581', '1689', 'b', '8773', 'P', 'a', 'L', 't']
[EX A]: 18591327p9601q3088R5648

[EX Q]: 2, 4, ['s', '4715', '8867', '5091', '435', 'z', '1765', 'H', '5107', 'F', 'F', 'i', '8923', '3693', 'F', '1211', '3111', '1669', 'm', 'c']
[EX A]: 190576885174

[EX Q]: 10, 18, ['7909', 'b', '6257', 'C', '9331', 'N', '6225', 'R', '9929', 'a', 'I', '1673', 'H', '4233', '9513', '8791', '6953', 'u', 'Z', 'E', 'd', 'J', 'J']
[EX A]:
u3596197831593324H3761Ia

