Brachytherapy geomety

I am EGSnrc users but I am trying to change it to FLUKA. So far I have studied brachytherapy byEGSnrc.
I want to study by FLUKA next. I need to learn gemotry design. However instead of building a geometry from zero, I need traying madification on existing one. Could any one give me brachytherapy geometry design of any seed?