I know some of the basics but I'm still confused about certain rules. When does an S become a SS and when does it become a $ (and what about $$)? I also don't know how to handle words that don't have an S or a K in them.

I was hoping to translate the core BDS list, but some of them are proving challenging:

• HP (Hewlett Packard)
• Siemans
• AXA
• SodaStream
• Ahava
• Sabra
• Puma
• Israeli fruits and vegetables

I was thinking something like HeWaffen PacKKKard and SSodaSStream but I'm not sure about the rest.

Thanks.

Edit: Forgot to list Puma