x_{1} and x_{2} share common parent x_{3} in hierarchy x_{4}

Distributive across all four arguments. See stura, nenri, grafu, tcana, dzena, turne'i, turnela, tursei, turnersei. No in-language definition for now because of uncertainty about grafu's definition.

- turne'i
- x
_{1}is a descendant of x_{2}in hierarchy x_{3} - turnersei
- x
_{1}is a descendant of x_{2}, x_{3}levels down from it, in hierarchy x_{4} - tursei
- x
_{1}is x_{3}(undirected) hops away from x_{2}in graph x_{4} - turnela
- x
_{1}is a child of x_{2}(one level below it) in hierarchy x_{3}