25 struct a3 { int xxx; };  member
27 struct a5 { template< typename T > struct xxx {}; };  struct
29 struct b1 { typedef int xxx; };  typedef
31 struct b3 { typedef int& xxx; };  typedef
32 struct b4 { typedef int* xxx; };  typedef
33 struct b5 { typedef int xxx[10]; };  typedef
34 struct b6 { typedef void (*xxx)(); };  typedef
35 struct b7 { typedef void (xxx)(); };  typedef
37 struct c1 { template< typename T > struct xxx {}; };  struct
38 struct c2 { template< typename T1, typename T2 > struct xxx {}; };  struct
39 struct c3 { template< typename T1, typename T2, typename T3 > struct xxx {}; };  struct
40 struct c4 { template< typename T1, typename T2, typename T3, typename T4 > struct xxx {}; };  struct
41 struct c5 { template< typename T1, typename T2, typename T3, typename T4, typename T5 > struct xxx …  struct