la .pycyn. cu cusku di'e
{lo ka ta pelxu} is clearly grammatical. the problem is that (like most
things that are grammatical) it doesn't make any obvious sense or,
perhaps, makes too many not very obvious senses. A property of worlds,
say, or a particular shade of yellow in this one or ... . How is it to
be avoided ? Allowing only {ce'u} after {ka}? And thus creating a new
word class --or two? Seems Draconian, when you can get by by just not
using it.
{lo ka ta pelxu} is grammatical but makes no sense to said group of speakers because a {ka} abstraction must contain at least one {ce'u}. There is no obvious place to go for {ce'u} here, so it's not well-formed. {ce'u}-less {ka} has fallen out of use and that's not really a new development, seeing that old jboske discussions already had settled on it.
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