tsetupyzbe lujvo

t1=zb1 is a lap [body part] of t2=zu1 supporting zb2.

Cf. tuple, zutse, zbepi, galtupcra. A lap only exists in a seated form, and not when a being is standing erect or when it is lying down.


In notes:

galtupcra
c1=g1 is the lap of t2.