Doctor Double X was created in 1958.
Double X - album - was created in 2006.
Doctor X - film - was created on 1932-08-03.
The Return of Doctor X was created on 1939-12-02.
double square (double x) { return x*x; } double cube (double x) { return x*x*x; }
I Am Not a Doctor was created in 1997.
There are no words that have double-x in them.
Where There Is No Doctor was created in 2011-10.
Doctor Doctor - UFO song - was created in 1979-01.
Doctor Pong was created in 1975.
Doctor Strange was created in 1963.
Rags - Doctor Who - was created in 2001.
Search for the Doctor was created in 1986.