Raxas Alliance
From Tardis Wiki, the free Doctor Who reference
The Raxas Alliance was an interplanetary union comprising four planets: Clom, Clix, Raxacoricovarlonpatorius and Raxacoricofallapatorius. As Clom and Raxacoricofallapatorius were in the same star system, it is possible that all of these planets were. (SJA: The Gift)
As Raxacoricofallapatorius and Raxacoricovarlonpatorius had similar names and Clom and Clix had similar names, it's possible that the four planets were made up of two pairs.
Since the Raxacoricofallapatorians and the people of Clom shared similarities, Clix and Raxacoricovarlonpatorius may have had similar lifeforms to each other and the other two planets.
