dumdu'o lujvo

x1 is the identity of x2

Brivla form of du'u x2 du ma kau. See kamdu'o, dubju'o

In notes:

kamcedu
x1 (ka) is the property/state of being x2
lizdu'o
x1 is the subjective conscious experience of being x2; x1 is what it's like to be x2
mazdu'osre
x1=s1 confuses the identity of x2=d1 as x3=s2=d2=m, a confusion under conditions x4=s3 by standard x5=s4; x1 mistakes x2 for x3.