Original sentence: First, he notes that there has long been confusion over the spelling because the sound produced by the word can be spelt either klung rta (river horse) or rlung rta (wind horse)
Edited sentence: First, he notes that there has long been confusion over the spelling because the sound produced by the word can be spelt either klung rta (river horse) or rlung rta (wind horse)--the first letter is silent in both cases