Unicode is structured into planes and furthermore into blocks: https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane https://en.wikipedia.org/w

Unicode is structured into planes and furthermore into blocks: https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilin... So you can actually separate them if you want pretty easily