I just wanna say that in Gëŕrek, one of the languages that developed in our system, "we" and "us" is never umbiguous
In outworld languages, everytime we say "we" meaning our system, singlets insert themselves in and it's very annoying
some outworld languages distinguish "we including you" and "we not including you" but Gëŕrek goes far further
é = I/me
ó = you
i = my people
u = your people (rarely used)
a =he/she/it/they/whatever 3rd person
you just combine them to make the rest
éó = me and you
éi = me and my people/group/etc
éió = me you and our friends
éa = me and them
éóa = me, you and them
éióa = everyone (this one is actually éióuan because long story)
óa = you and them
óu = you and your people
etc
This was a wonderful idea of T́aigëŕ (currently Winter), it was é i ó u a n, the n being "their people", which got dropped
you put them inside verbs, which another brilliant idea for a whole other post