In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.

[EX Q]: 11, 20, ['T', 'U', '8683', 'N', 'X', 'F', '1307', 'Y', '1347', '6855', 'Y', '2007', '8981', '1943', 'F', '5463', '9905', 'L', '3509', '5787', 'b']
[EX A]: 57873509L99055463F194389812007Y

[EX Q]: 5, 5, ['M', 'N', 'S', '1125', 'B']
[EX A]: B

[EX Q]: 12, 27, ['Q', 'p', '1647', 'j', '4151', 'N', '7723', '7355', 'L', 'm', 'p', 'v', 'E', 'A', 'Z', 'K', 'A', '5909', '5489', 'R', '8639', '8945', '679', '4473', 'a', '5089', '1295']
[EX A]:
12955089a447367989458639R54895909AKZAEv