Also: Is "la nu .klam." valid?

NU takes a bridi and converts it into a selbri, "x1 is [some particular abstraction about] [the bridi]". So {la nu .klam.} isn't valid, because {nu .klam.} isn't valid, because {.klam.} is a cmevla, it's not a bridi. But {la nu broda} would be a valid name (not a cmevla, but a selbri-tail name).