Noteworthy to note that the salute Primi sim is used to mean Take care! and, of course, primin sim would be used for a group of people. As mentioned above the reflexive is invariable.
Lev totene sim They look at themselves (masc.)
Lev tegene sim They look at themselves (fem.)
Primi sim Take care!
Primin sim Take care, you guys!
And so on. When asked a riddle and the child can't think of answer asking for a hint, a Tulvan might say
Tulvi sim siv! Think for yourself!
Posing the child a challenge.