    
    <http://example.com/foo#a>     <http://example.com/foo#b> <http://example.com/foo#c> .
    
    <http://example.com/foo#hyphen-ated>     <http://example.com/foo#dot.ted> <http://example.com/foo#hyphen-and.dot> .
    
    <http://example.com/foo#minus-_underscore>     <http://example.com/foo#under_score> <http://example.com/foo#underscore_-minus> .
    
