formula to display choices of more than one in a list box
 

I have created a form for data entry. I have a list box with options from
J13 to J22. K14 is my cell link. In other list boxes where only one option
is choosen l have put an index formula to display the option they have
choosen. I am looking for a formula that would display if more than one
option is choosen for this list box( ie red, blue, green) Any other
suggestions on how to capture the options are welcome. I am using the
databse wizard to capture the data entry. I really don't want to change my
list box to check boxes (true/ false) if l don't have to. This makes for
numerous columns with lots of true false displaying

Thank you in advance to any responses/suggestions
Lynda S