We also notice that such Boolean compounds of "pure demonstratives" can Booleanly combine with non demonstrative NPs to hold syntactically complex (demonstrative) NPs .
we have Leo and this, (as in I hate Leo and this), Lea but not this, some logicians but not this, most philosophers but not this one, this but not this neither most dogs, this but no artichoke, between six and ten Latin letters but not this, etc.