How to iterate through unselected options in select_multiple question

Please, how do I create a loop to iterate through the options I have not selected; in my excel attached, question 8.0 (i) and 8.0 (ii) should only show the options not selected in question 8.0, how do I achieve this?unselected.xls (164 KB)

@edero, maybe this post discussed previously should help you solve your issue: