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.

3, 4, ['D', 'k', 'Q', '3207']
3207Q

4, 10, ['5537', 'w', '29', '6133', '7949', 'f', 'c', '3725', '2943', 'W', 'U', '1905', 'l', 'Z', 'r']
W29433725cf79496133

10, 21, ['Z', 'c', '7645', 'i', 'w', 'i', '7845', '6675', 'y', '27', 'z', '6767', '6219', '3949', '8325', '5295', '8213', '8783', 'Q', '5443', 'O', 'N', '3883', '6595', '6293', 'h']

O5443Q8783821352958325394962196767z27