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: 10, 12, ['3201', '3243', 'H', '9801', 't', '4395', 't', 'B', '519', 'k', 'e', '6175', '4761', 'W', 'd', '7789', 'Q']

6175ek