[lojban-beginners] Form of le sumti

[Brian Schack <spon0112@morehead-st.edu>]

Often when reading le gismu definitions, I don't know what form to put 
the le sumti that fill the places of the le gismu. For example, {zo 
tertau lujvo lu te tanru li'u le tanru lu te tanru li'u}. The 
definition of {lujvo} says "(text)" about x1. However for x2, x3, and 
x4, I don't know which to use: quote, {su'u}, {du'u}, or something else.

Could someone please explain whether this matters and, if so, how I 
should know the correct form? Thank you in advance.