/* ERRORS */
typedef a[,] = ();
typedef b[+] = ();
typedef c[[]] = ();
typedef d[0] = ();
typedef e[()()] = ();
typedef f[a b c] = ();
typedef g[,,] = ();
typedef h[T,,] = ();
typedef i[T,,U] = ();
typedef j T = ();
typedef k(T) = ();
typedef l(T,U) = ();
typedef m[T:] = ();
typedef n[:T] = ();
typedef o[T:,] = ();
typedef p[T:,U] = ();