Definition: 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.
Input: 4, 11, ['7531', '93', 'T', 'R', 'F', 'a', 'K', '761', '3953', 's', 'q', '1285', 'G', '2469', 'm', '1511', 'r', 'R', '5537', 'f', 'j', '7379', '5023', '3799']

qs3953761KaFR