Read this and answer the question. If the question is unanswerable, say "unanswerable".

In September 2012 at the Tokyo Game Show, Sony announced that a new, slimmer PS3 redesign (CECH-4000) was due for release in late 2012 and that it would be available with either a 250 GB or 500 GB hard drive. Three versions Super Slim model were revealed: one with a 500 GB hard drive, a second with a 250 GB hard drive which is not available in PAL regions, and a third with a 12 GB flash storage that was only available in PAL regions. The storage of 12 GB model is upgradable with an official standalone 250 GB hard drive. A vertical stand was also released for the model. In the United Kingdom, the 500 GB model was released on September 28, 2012; and the 12 GB model was released on October 12, 2012. In the United States, the PS3 Super Slim was first released as a bundled console. The 250 GB was model was bundled with Game of the Year edition of Uncharted 3: Drake's Deception and released on September 25, 2012; and the 500 GB model was bundled with Assassin's Creed III and released on October 30, 2012. In Japan, the black colored Super Slim model was released on October 4, 2012; and the white colored Super Slim model was released on November 22, 2012. The Super Slim model is 20 percent smaller and 25 percent lighter than the Slim model and features a manual sliding disc cover instead of a motorized slot-loading disc cover of the Slim model. The white colored Super Slim model was released in the United States on January 27, 2013 as part of the Instant Game Collection Bundle. The Garnet Red and Azurite Blue colored models were launched in Japan on February 28, 2013. The Garnet Red version was released in North America on March 12, 2013 as part of the God of War: Ascension bundle with 500 GB storage and contained God of War: Ascension as well as the God of War Saga. The Azurite Blue model was released as a GameStop exclusive with 250GB storage.

How many versions of the CECH-4000 weren't made?
unanswerable