5. Symmetrical and asymmetrical lujvo

5.1)  ``banli'': b1 is great in property b2 by standard b3
    ``sonci'': s1 is a soldier of army s2

In this case the s1 place of ``sonci'' is redundant, since it is equivalent to the b1 place of ``banli''. Therefore the place structure of ``balsoi'' need not include places for both s1 and b1, as they refer to the same thing. So the place structure of ``balsoi'' is at most

5.2)  b1=s1 is a great soldier of army s2
        in property b2 by standard b3

5.3)  ``tirna'': t1 listens to t2 against background noise t3
    ``jundi'': j1 pays attention to j2

5.4)  j1=t1 listens to j2=t2 against background noise t3

Why so? Because not only is the j1 place (the one who pays attention) equivalent to the t1 place (the hearer), but the j2 place (the thing paid attention to) is equivalent to the t2 place (the thing heard).

A substantial minority of lujvo have the property that the first place of the seltau (``gerku'' in this case) is equivalent to a place other than the first place of the tertau; such lujvo are said to be ``asymmetrical''. (There is a deliberate parallel here with the terms ``asymmetrical tanru'' and ``symmetrical tanru'' used in Chapter 5.)

In principle any asymmetrical lujvo could be expressed as a symmetrical lujvo. Consider ``gerzda'', discussed in Section 3, where we learned that the g1 place was equivalent to the z2 place. In order to get the places aligned, we could convert ``zdani'' to ``se zdani'' (or ``selzda'' when expressed as a lujvo). The place structure of ``selzda'' is

5.5)  s1 is housed by nest s2

5.6)  s1=g1 is a dog housed in nest s2 of dog breed g2

However, although ``gerselzda'' is a valid lujvo, it doesn't translate ``doghouse''; its first place is the dog, not the doghouse. Furthermore, it is more complicated than necessary; ``gerzda'' is simpler than ``gerselzda''.

From the reader's or listener's point of view, it may not always be obvious whether a newly met lujvo is symmetrical or asymmetrical, and if the latter, what kind of asymmetrical lujvo. If the place structure of the lujvo isn't given in a dictionary or elsewhere, then plausibility must be applied, just as in interpreting tanru.

The lujvo ``karcykla'', for example, is based on ``karce klama'', or ``car goer''. The place structure of ``karce'' is:

5.7)  ka1 is a car carrying ka2 propelled by ka3

A asymmetrical interpretation of ``karcykla'' that is strictly analogous to the place structure of ``gerzda'', equating the kl2 (destination) and ka1 (car) places, would lead to the place structure

5.8)  kl1 goes to car kl2=ka1 which carries ka2
        propelled by ka3 from origin kl3
        via route kl4 by means of kl5

But in general we go about in cars, rather than going to cars, so a far more likely place structure treats the ka1 place as equivalent to the kl5 place, leading to

5.9)  kl1 goes to destination kl2 from origin kl3
        via route kl4 by means of car kl5=ka1
        carrying ka2 propelled by ka3.