I just finished the whole course up to level 5
Do brother and sister not have a required prefix? Which relatives do and don't have a required possessive prefix?
The a- indicates that these are generic siblings. You can instead have shínaaí, binaaí, etc. Duo should really have introduced the person prefixes in a coherent manner, it makes a lot of the language much easier
They all have required possessive prefixes. The a- versions are rare (but can be applied to all family members). I wish they would teach them all with shi-, ni-, bi-.
They both should have the word Shi in front if your talking about your brother and sister.