Sure as there's an "l" at the end of a dragon's tail, these three words are at the start of every scale

This tricky enigma is formulated in a way to confuse the reader, but the scale referred in the sentence ("at the start of every scale"), is actually the musical scale read in the standard solmization scale, "Do Re Mi", the alternative reading to the "C D E" in English; there are no other three words that for sure are at the start of every scale apart from these ones.