It's possible the bread and shell can be split into a top and bottom flavor, and some models additionally suggest Strange Bread and Charm Shells.

"Turtle Sandwich Standard Model", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

Alt Text

It's possible the bread and shell can be split into a top and bottom flavor, and some models additionally suggest Strange Bread and Charm Shells.