clinoi lujvo

n1=c4 is an instructional message about n2=c3 with contents c2 intended for audience n4=c1.

In notes:

ctucku
cu1=ct1 is a textbook for teaching ideas/methods ct3 (du'u), by author cu3 for audience cu4=ct2 about subject(s) ct4 by method ct5, preserved in medium cu5.