Excel 2007 : Help with a lookup that will return multiple occurrences

Hi,
I'm trying to figure out how to do a lookup that will return multiple occurrences. I searched the forums and tried to manipulate a function that was used to answer someone else's question, but it isn't working properly. Attached is a sample of what I'm trying to do. There are 2 sheets List and Flags. I would like to lookup the Number (Column C on List) and return all the Codes (Column H on Flags) in cells k-whatever on the List sheet. Hopefully, that made sense. The formulas I have in List K2:R4 and Flags J2:J24 are the formulas I was trying to make work. If I can get those to work that would be fine or if there is a better way to do it that would be great too. Thanks in advance for any guidance you can provide.