I need to list K2 categories and titles of the K2 Items for each of those categories. I think I saw this someplace but can't find it. I need to do this on the Home Page. This kind of thing, but in two columns:

Category1
TitleA
TitleB
TitleC

Category2
Title1
Title2

Category3
TitleAlpha
TitleBeta

Anyone have suggestion of how to best do this? Is this already done someplace so I can see the PHP code? Thanks!