Three-Speed is a 11 letter English word. It's valid Scrabble word worth 8 points. It's valid Words with friends word worth 7 points.
You can make 302 anagrams from letters in three-speed (-deeeehprst).
For the full enjoyment of tandem riding, therefore, a two-speed gear is a necessity, while a three-speed gear is better.
Two-speed and three-speed gears are now very commonly fitted to cycles.
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