./test/VC/ElementValid7:7: element doc: validity error : Element doc content does not follow the DTD, expecting ((a | b)* , c+ , a , b? , c , a?), got (a b a c c a)

<doc><c/><c/></doc>

                                   ^

./test/VC/ElementValid7:8: element doc: validity error : Element doc content does not follow the DTD, Expecting more child

^