RelN and NRel are used, if one wants to say "fish that eat people", one can say "bek itak ire", "bek itak res ire", "ire res bek itak", "ire res bek itak zak", "ire hat bek itak", "ire bek itak zak", etc. but the first is the main way to form relative clauses, and the way using nominalizers "tak/zak", as shown in the phrase "ire bek itak zak", is also common.