1.1 misho 1: <?xml version="1.0"?> 2: <!DOCTYPE a [ 3: <!ELEMENT a (#PCDATA | b | c)*> 4: <!ELEMENT b (#PCDATA)> 5: <!ELEMENT c (#PCDATA)> 6: <!ELEMENT a (#PCDATA | b | c)*> 7: ]> 8: <a> violates [ VC: Unique Element Type Declaration ] </a>