Phonetic number systems like this are commonly used by memory athletes, like the Major System[1] The usable range can be expanded further using color, smell, t

Phonetic number systems like this are commonly used by memory athletes, like the Major System[1] The usable range can be expanded further using color, smell, taste, and so on. https://artofmemory.com/wiki/Major_System/ https://artofmemory.com/wiki/Major_System/